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        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><a name="FIS_UNIDENTIFIED_TABLE"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>As
          filed with the Securities and Exchange Commission on October 6,
          2006</strong></font></a></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="right"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Registration
          No. 333-</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">
          <div>
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          </div>&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 12pt; FONT-FAMILY: Times New Roman"><strong>UNITED
          STATES</strong></font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 12pt; FONT-FAMILY: Times New Roman"><strong>SECURITIES
          AND EXCHANGE COMMISSION</strong></font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Washington,
          D.C. 20549</strong></font></div>
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        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center">&#160;</div>
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          STATEMENT UNDER THE SECURITIES ACT OF 1933</strong></font></div>
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        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
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          CORPORATION</strong></font></div>
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                <td align="left" valign="bottom" width="40%">
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                <td align="left" valign="bottom" width="4%">
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                <td valign="top" width="40%">
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              <tr>
                <td valign="top" width="40%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(State
                    or Other Jurisdiction of</font></div>
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                    Employer Identification No.)</font></div>
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              <tr>
                <td valign="top" width="40%">
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              <tr>
                <td valign="top" width="40%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>7130
                    South Lewis, Suite 1000</strong></font></div>
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                <td valign="top" width="40%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Tulsa,
                    Oklahoma</strong></font></div>
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              <tr>
                <td valign="top" width="40%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(Address
                    of Principal Executive Offices)</font></div>
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                <td align="left" valign="bottom" width="4%">
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          Corporation Employees&#8217; Thrift Plan</strong></font></div>
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          Title of the Plan)</font></div>
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                <td align="left" valign="bottom" width="40%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
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                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="bottom" width="40%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
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              <tr>
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                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Mark
                    E. Schell</strong></font></div>
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                    Vice President and General Counsel</strong></font></div>
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                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
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                <td valign="top" width="40%">
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                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
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                <td valign="top" width="40%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Robert
                    J. Melgaard, Esq.</strong></font></div>
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              <tr>
                <td valign="top" width="40%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>7130
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              </tr>
              <tr>
                <td valign="top" width="40%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Tulsa,
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                <td valign="top" width="40%">
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              <tr>
                <td valign="top" width="40%">
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                <td align="left" valign="bottom" width="4%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
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              </tr>
              <tr>
                <td valign="top" width="40%">
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                <td align="left" valign="bottom" width="4%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td valign="top" width="40%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="center">&#160;</div>
                </td>
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                <td align="left" colspan="17" valign="bottom" width="84%" style="border-bottom: medium none;">
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                </td>
              </tr>
              <tr>
                <td align="left" valign="bottom" width="1%">
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                <td align="left" colspan="3" valign="bottom" width="31%">
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                </td>
                <td align="left" valign="bottom" width="1%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.3pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="bottom" width="1%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="bottom" width="8%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="bottom" width="1%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.3pt" align="left">&#160;</div>
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                <td align="left" valign="bottom" width="1%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
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                <td valign="bottom" width="8%">
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                <td align="left" valign="bottom" width="1%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.3pt" align="left">&#160;</div>
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                <td align="left" valign="bottom" width="1%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
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                <td valign="bottom" width="15%">&#160;</td>
                <td align="left" valign="bottom" width="1%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.3pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="bottom" width="1%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
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                <td valign="bottom" width="10%">&#160;</td>
                <td align="left" valign="bottom" width="1%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
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                <td align="left" colspan="3" valign="bottom" width="31%">&#160;</td>
                <td align="left" valign="bottom" width="1%">&#160;</td>
                <td align="left" valign="bottom" width="1%">&#160;</td>
                <td align="left" valign="bottom" width="8%">&#160;</td>
                <td align="left" valign="bottom" width="1%">&#160;</td>
                <td align="left" valign="bottom" width="1%">&#160;</td>
                <td valign="bottom" width="8%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Maximum</strong></font></div>
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                <td align="left" valign="bottom" width="1%">&#160;</td>
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                <td align="left" valign="bottom" width="1%">&#160;</td>
                <td valign="bottom" width="10%">&#160;</td>
                <td align="left" valign="bottom" width="1%">&#160;</td>
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                <td align="left" colspan="3" valign="bottom" width="31%">&#160;</td>
                <td align="left" valign="bottom" width="1%">&#160;</td>
                <td align="left" valign="bottom" width="1%">&#160;</td>
                <td valign="bottom" width="8%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Amount</strong></font></div>
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                <td align="left" valign="bottom" width="1%">&#160;</td>
                <td align="left" valign="bottom" width="1%">&#160;</td>
                <td valign="bottom" width="8%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Offering</strong></font></div>
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                <td align="left" valign="bottom" width="1%">&#160;</td>
                <td valign="bottom" width="15%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Maximum</strong></font></div>
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                <td align="left" valign="bottom" width="1%">&#160;</td>
                <td align="left" valign="bottom" width="1%">&#160;</td>
                <td valign="bottom" width="10%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Amount
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                </td>
                <td align="left" valign="bottom" width="1%">&#160;</td>
              </tr>
              <tr>
                <td align="left" valign="bottom" width="1%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td colspan="3" valign="bottom" width="31%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Title
                    Of Each Class Of Securities</strong></font></div>
                </td>
                <td align="left" valign="bottom" width="1%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.3pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="bottom" width="1%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td valign="bottom" width="8%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>To
                    Be</strong></font></div>
                </td>
                <td align="left" valign="bottom" width="1%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.3pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="bottom" width="1%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td valign="bottom" width="8%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Price</strong></font></div>
                </td>
                <td align="left" valign="bottom" width="1%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.3pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="bottom" width="1%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td valign="bottom" width="15%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Aggregate</strong></font></div>
                </td>
                <td align="left" valign="bottom" width="1%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.3pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="bottom" width="1%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td valign="bottom" width="10%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Registration</strong></font></div>
                </td>
                <td align="left" valign="bottom" width="1%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="bottom" width="1%" style="border-bottom: black thin solid;">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td colspan="3" valign="bottom" width="31%" style="border-bottom: black thin solid;">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>To
                    Be Registered</strong></font></div>
                </td>
                <td align="left" valign="bottom" width="1%" style="border-bottom: black thin solid;">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.3pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="bottom" width="1%" style="border-bottom: black thin solid;">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td valign="bottom" width="8%" style="border-bottom: black thin solid;">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Registered</strong></font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;</font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>(1)</strong></font></div>
                </td>
                <td align="left" valign="bottom" width="1%" style="border-bottom: black thin solid;">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.3pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="bottom" width="1%" style="border-bottom: black thin solid;">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td valign="bottom" width="8%" style="border-bottom: black thin solid;">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Per
                    Share</strong></font></div>
                </td>
                <td align="left" valign="bottom" width="1%" style="border-bottom: black thin solid;">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.3pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="bottom" width="1%" style="border-bottom: black thin solid;">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td valign="bottom" width="15%" style="border-bottom: black thin solid;">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Offering
                    Price</strong></font></div>
                </td>
                <td align="left" valign="bottom" width="1%" style="border-bottom: black thin solid;">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.3pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="bottom" width="1%" style="border-bottom: black thin solid;">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td valign="bottom" width="10%" style="border-bottom: black thin solid;">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Fee</strong></font></div>
                </td>
                <td align="left" valign="bottom" width="1%" style="border-bottom: black thin solid;">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="bottom" width="1%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td align="left" colspan="3" valign="bottom" width="31%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 18pt; TEXT-INDENT: -18pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Common
                    Stock, par value $0.20 per share(3)</font></div>
                </td>
                <td align="left" valign="bottom" width="1%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.3pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="bottom" width="1%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td valign="bottom" width="8%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">1,500,000</font></div>
                </td>
                <td align="left" valign="bottom" width="1%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.3pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="bottom" width="1%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td valign="bottom" width="8%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">$43.88
                    </font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>(2)</strong></font></div>
                </td>
                <td align="left" valign="bottom" width="1%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.3pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="bottom" width="1%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td valign="bottom" width="15%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">$
                    65,820,000</font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>(2)</strong></font></div>
                </td>
                <td align="left" valign="bottom" width="1%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.3pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="bottom" width="1%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td valign="bottom" width="10%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">$7,042.74</font></div>
                </td>
                <td align="left" valign="bottom" width="1%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
              </tr>
              <tr>
                <td align="left" colspan="17" valign="bottom" width="84%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 14.8pt" align="left">&#160;</div>
                </td>
              </tr>
              <tr>
                <td align="left" colspan="2" valign="middle" width="5%">&#160;</td>
                <td align="left" valign="middle" width="3%">&#160;</td>
                <td align="left" colspan="14" valign="middle" width="76%">&#160;</td>
              </tr>
              <tr>
                <td align="left" colspan="2" valign="top" width="5%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(1)</font></div>
                </td>
                <td align="left" valign="top" width="3%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td align="left" colspan="14" valign="top" width="76%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">This
                    Registration Statement covers shares to be acquired by the Trustee
                    pursuant to the Unit Corporation Employees&#8217; Thrift Plan (the "Plan") for
                    the accounts of Plan participants. In addition, pursuant to Rule
                    416(c)
                    under the Securities Act of 1933, as amended, this Registration
                    Statement
                    also covers an indeterminate amount of interests to be offered
                    or sold
                    pursuant to the Plan. This Registration Statement further includes
                    an
                    indeterminate number of additional shares that may be issued
                    to adjust the
                    number of shares issued pursuant to the Plan as the result of
                    any future
                    stock dividend, stock split or similar adjustment of the outstanding
                    shares of Common Stock of the Registrant. </font></div>
                </td>
              </tr>
              <tr>
                <td align="left" colspan="2" valign="middle" width="5%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td align="left" colspan="15" valign="top" width="79%">&#160;</td>
              </tr>
              <tr>
                <td align="left" colspan="2" valign="top" width="5%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(2)</font></div>
                </td>
                <td align="left" valign="top" width="3%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td align="left" colspan="14" valign="top" width="76%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Calculated
                    solely for purposes of this offering under Rule 457(h) of the
                    Securities
                    Act of 1933, as amended, on the basis of the average of the high
                    and low
                    selling prices per share of Common Stock of the Registrant on
                    October 5,
                    2006, as reported on the New York Stock Exchange.</font></div>
                </td>
              </tr>
              <tr>
                <td align="left" colspan="2" valign="top" width="5%">&#160;</td>
                <td align="left" valign="top" width="3%">&#160;</td>
                <td align="left" colspan="14" valign="top" width="76%">&#160;</td>
              </tr>
              <tr>
                <td align="left" colspan="2" valign="top" width="5%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(3)</font></div>
                </td>
                <td align="left" valign="top" width="3%">&#160;</td>
                <td align="left" colspan="14" valign="top" width="76%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Each
                    share of Common Stock of the Registrant is accompanied by a preferred
                    share purchase right under the Rights Agreement as amended and
                    restated on
                    May 18, 2005, between the Registrant and Mellon Investor Services,
                    L.L.C,
                    as Rights Agent.</font></div>
                </td>
              </tr>

          </table>
        </div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;

          <div>
            <hr style="COLOR: black" align="left" noshade size="2" width="100%">
          </div>
        </div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div><br>
        <div id="PGBRK" style="MARGIN-LEFT: 0pt; WIDTH: 100%; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
          <div id="FTR">
            <div id="GLFTR" style="WIDTH: 100%" align="left">
            </div>
          </div>
          <div id="PN" style="PAGE-BREAK-AFTER: always">
            <div style="WIDTH: 100%; TEXT-ALIGN: center">
            </div>
            <div style="WIDTH: 100%; TEXT-ALIGN: center">
            </div>
          </div>
          <div id="HDR">
            <div id="GLHDR" style="WIDTH: 100%" align="right">
            </div>
          </div>
        </div><br>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><a name="Y12835SV8_HTM_TOC"/><a name="eolPage3"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong><u>TABLE
          OF CONTENTS</u></strong></font></a></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
        <div>
          <table cellpadding="0" cellspacing="0" width="100%">

              <tr>
                <td align="left" colspan="2" valign="top" width="64%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">PART
                    I</font></div>
                </td>
                <td align="left" valign="top" width="4%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">1</font></div>
                </td>
              </tr>
              <tr>
                <td align="left" colspan="2" valign="top" width="64%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">PART
                    II</font></div>
                </td>
                <td align="left" valign="top" width="4%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">1</font></div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="top" width="5%">&#160;</td>
                <td align="justify" valign="top" width="58%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Item
                    3. Incorporation of Documents by Reference</font></div>
                </td>
                <td align="left" valign="top" width="4%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">1</font></div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="top" width="5%">&#160;</td>
                <td align="justify" valign="top" width="58%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Item
                    4. Description of Securities</font></div>
                </td>
                <td align="left" valign="top" width="4%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">1</font></div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="top" width="5%">&#160;</td>
                <td align="justify" valign="top" width="58%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Item
                    5. Interests of Named Experts and Counsel</font></div>
                </td>
                <td align="left" valign="top" width="4%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">2</font></div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="top" width="5%">&#160;</td>
                <td align="justify" valign="top" width="58%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Item
                    6. Indemnification of Directors and Officers</font></div>
                </td>
                <td align="left" valign="top" width="4%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">2</font></div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="top" width="5%">&#160;</td>
                <td align="justify" valign="top" width="58%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Item
                    7. Exemption from Registration Claimed</font></div>
                </td>
                <td align="left" valign="top" width="4%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">2</font></div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="top" width="5%">&#160;</td>
                <td align="justify" valign="top" width="58%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Item
                    8. Exhibits</font></div>
                </td>
                <td align="left" valign="top" width="4%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">2</font></div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="top" width="5%">&#160;</td>
                <td align="justify" valign="top" width="58%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Item
                    9. Undertakings</font></div>
                </td>
                <td align="left" valign="top" width="4%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">3</font></div>
                </td>
              </tr>
              <tr>
                <td align="left" colspan="2" valign="top" width="64%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">SIGNATURES</font></div>
                </td>
                <td align="left" valign="top" width="4%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">5</font></div>
                </td>
              </tr>
              <tr>
                <td align="left" colspan="2" valign="top" width="64%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">EXHIBIT
                    INDEX</font></div>
                </td>
                <td align="left" valign="top" width="4%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">7</font></div>
                </td>
              </tr>
              <tr>
                <td align="left" colspan="2" valign="top" width="64%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">EX-5:
                    OPINION AND CONSENT OF MARK E. SCHELL, ESQ.</font></div>
                </td>
                <td align="left" valign="top" width="4%">&#160;</td>
              </tr>
              <tr>
                <td align="left" colspan="2" valign="top" width="64%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">EX-23.1:
                    CONSENT OF PRICEWATERHOUSECOOPERS LLP</font></div>
                </td>
                <td align="left" valign="top" width="4%">&#160;</td>
              </tr>
              <tr>
                <td align="left" colspan="2" valign="top" width="64%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">EX-23.3:
                    CONSENT OF RYDER SCOTT COMPANY</font></div>
                </td>
                <td align="left" valign="top" width="4%">&#160;</td>
              </tr>
              <tr>
                <td align="left" colspan="2" valign="top" width="64%">&#160;</td>
                <td align="left" valign="top" width="4%">&#160;</td>
              </tr>

          </table>
        </div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div id="PGBRK" style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
          <div id="FTR">
            <div id="GLFTR" style="WIDTH: 100%" align="left">
            </div>
          </div>
          <div id="PN" style="PAGE-BREAK-AFTER: always">
            <div style="WIDTH: 100%; TEXT-ALIGN: center">
            </div>
            <div style="WIDTH: 100%; TEXT-ALIGN: center">
            </div>
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          <div id="HDR">
            <div id="GLHDR" style="WIDTH: 100%" align="right">
            </div>
          </div>
        </div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><br></div><br>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>PART
          I</strong></font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>INFORMATION
          REQUIRED IN THE SECTION 10(A) PROSPECTUS</strong></font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">The
          documents containing the information specified in Part I of Form S-8 have
          previously been, or will be, sent or given to Plan participants as specified
          by
          Rule 428(b)(1) of the Securities Act of 1933, as amended. Such documents
          are not
          required to be and are not filed with the Securities and Exchange Commission
          (the &#8220;Commission&#8221;) either as part of this Registration Statement or as
          prospectuses or prospectus supplements pursuant to Rule 424. These documents
          and
          the documents incorporated by reference in this Registration Statement
          pursuant
          to Item 3 of Part II of this Form S-8, taken together, constitute a prospectus
          that meets the requirements of Section 10(a) of the Securities Act of
          1933.</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><a name="Y12835SV8_HTM_001"/><a name="FIS_PART_II"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>PART
          II</strong></font></a></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>INFORMATION
          REQUIRED IN THE REGISTRATION STATEMENT</strong></font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><a name="Y12835SV8_HTM_002"/><a name="FIS_DOCUMENTS_BY_REFERENCE"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Item
          3. Incorporation of Documents by Reference</strong></font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">.</font></a></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">The
          following documents filed with the Commission by Unit Corporation, a Delaware
          corporation (the &#8220;Company&#8221; or the &#8220;Registrant&#8221;), or the Unit Corporation
          Employees' Thrift Plan (the "Plan"), as the case may be, are incorporated
          by
          reference herein:</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
        <div>
          <table cellpadding="0" cellspacing="0" width="100%">

              <tr>
                <td align="left" valign="top" width="3%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(a)</font></div>
                </td>
                <td align="left" valign="top" width="1%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="top" width="80%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">the
                    Company&#8217;s Annual Report on Form 10-K for the fiscal year ended December
                    31, 2005, filed with the Commission on March 13, 2006;</font></div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="middle" width="3%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td align="left" colspan="2" valign="top" width="81%">&#160;</td>
              </tr>
              <tr>
                <td align="left" valign="top" width="3%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(b)</font></div>
                </td>
                <td align="left" valign="top" width="1%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="top" width="80%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">the
                    Company&#8217;s Quarterly Reports on Form 10-Q for the fiscal quarters ended
                    March 31, 2006 and June 30, 2006, filed with the Commission on
                    May 5, 2006
                    and August 8, 2006, respectively;</font></div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="middle" width="3%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td align="left" colspan="2" valign="top" width="81%">&#160;</td>
              </tr>
              <tr>
                <td align="left" valign="top" width="3%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(c)</font></div>
                </td>
                <td align="left" valign="top" width="1%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="top" width="80%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">the
                    Company's Current Reports on Form 8-K, filed with the Commission
                    on
                    January 17, 2006; February 8, 2006; April 18, 2006; May 9, 2006;
                    and
                    October 3, 2006; </font></div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="middle" width="3%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td align="left" colspan="2" valign="top" width="81%">&#160;</td>
              </tr>
              <tr>
                <td align="left" valign="top" width="3%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(d)</font></div>
                </td>
                <td align="left" valign="top" width="1%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="top" width="80%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">the
                    Plan&#8217;s Annual Report on Form 11-K for the year ended December 31,
                    2005,
                    filed with the Commission on June 29, 2006; </font></div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="top" width="3%">&#160;</td>
                <td align="left" valign="top" width="1%">&#160;</td>
                <td align="left" valign="top" width="80%">&#160;</td>
              </tr>
              <tr>
                <td align="left" valign="top" width="3%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(e)</font></div>
                </td>
                <td align="left" valign="top" width="1%">&#160;</td>
                <td align="left" valign="top" width="80%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">the
                    description of the Registrant&#8217;s common stock set forth in the Registrant&#8217;s
                    Registration Statement on Amended Form 8-B, dated October 7,
                    1986, filed
                    with the Commission, including any amendment or report heretofor
                    or
                    hereafter filed for the purpose of updating the description;
                    and</font></div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="top" width="3%">&#160;</td>
                <td align="left" valign="top" width="1%">&#160;</td>
                <td align="left" valign="top" width="80%">&#160;</td>
              </tr>
              <tr>
                <td align="left" valign="top" width="3%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(f)</font></div>
                </td>
                <td align="left" valign="top" width="1%">&#160;</td>
                <td align="left" valign="top" width="80%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">the
                    description of rights to purchase preferred stock contained in
                    the
                    Registrant's Registration Statement on Form 8-A/A, filed with
                    the
                    Commission on May 23, 2005, including any amendment or report
                    heretofor or
                    hereafter filed for the purpose of updating the
                    description.</font></div>
                </td>
              </tr>

          </table>
        </div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">All
          documents filed by the Registrant or the Plan pursuant to Sections 13(a),
          13(c),
          14 and 15(d) of the Securities Exchange Act of 1934 (other than current
          reports
          or portions thereof furnished under Item 2.02 or 7.01 of Form 8-K), subsequent
          to the effective date of this Registration Statement and prior to the filing
          of
          a post-effective amendment to this Registration Statement indicating that
          all
          securities offered hereby have been sold or deregistering all securities
          then
          remaining unsold, shall be deemed to be incorporated by reference herein
          and to
          be part hereof from the date of filing of such documents. Any statement
          contained in any document incorporated or deemed to be incorporated by
          reference
          herein shall be deemed to be modified or superseded for purposes of this
          Registration Statement to the extent that a statement in any other subsequently
          filed document which also is or is deemed to be incorporated by reference
          herein
          modifies or supersedes such statement. Any such statement so modified or
          superseded shall not be deemed to constitute a part of this Registration
          Statement, except as so modified or superseded.</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><a name="Y12835SV8_HTM_003"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Item
          4. Description of Securities.</strong></font></a></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Not
          applicable.</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div id="PGBRK" style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
          <div id="FTR">
            <div id="GLFTR" style="MARGIN-LEFT: 0pt; WIDTH: 100%; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 8pt; COLOR: #000000; FONT-FAMILY: Times New Roman">1</font></div>
          </div>
          <div id="PN" style="PAGE-BREAK-AFTER: always">
            <div style="WIDTH: 100%; TEXT-ALIGN: center">
            </div>
            <div style="WIDTH: 100%; TEXT-ALIGN: center">
            </div>
          </div>
          <div id="HDR">
            <div id="GLHDR" style="WIDTH: 100%" align="right">
            </div>
          </div>
        </div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><a name="Y12835SV8_HTM_004"/><a name="FIS_EXPERTS"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Item
          5. Interests of Named Experts and Counsel.</strong></font></a></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Mark
          E.
          Schell, General Counsel of the Company, as our counsel, will issue an opinion
          for us regarding the validity of the shares of common stock offered by
          this
          Registration Statement. Mark E. Schell beneficially owns 73,750 shares
          of our
          common stock.</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><a name="FIS_INDEMNIFICATION"/><a name="Y12835SV8_HTM_005"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Item
          6. Indemnification of Directors and Officers.</strong></font></a></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Article
          4
          of our by-laws provides for indemnification of any person who is, or is
          threatened to be made, a witness in or a party to any proceeding by reason
          of
          his or her position as a director, officer, or employee, to the extent
          authorized by applicable law including, but not limited to, the Delaware
          General
          Corporation Law. Under Section 145 of the Delaware General Corporation
          Law, a
          corporation generally has the power to indemnify its present and former
          directors, officers, employees and agents against expenses and liabilities
          incurred by them in connection with any suit to which they are, or are
          threatened to be made, a party by reason of their serving in such positions
          so
          long as they acted in good faith and in a manner they reasonably believed
          to be
          in, or not opposed to, the best interests of the corporation, and with
          respect
          to any criminal action, they had no reasonable cause to believe their conduct
          was unlawful. With respect to suits by or in the right of a corporation,
          however, indemnification is generally limited to attorney's fees and other
          expenses and is not available if such person is adjudged to be liable to
          the
          corporation unless the court determines that indemnification is appropriate.
          In
          addition, a corporation has the power to purchase and maintain insurance
          for
          such persons. Article 4 of our by-laws also expressly provides that the
          power to
          indemnify authorized thereby is not exclusive of any rights granted to
          present
          and former directors, officers, employees and agents, under any bylaw,
          agreement, vote of stockholders or disinterested directors, or otherwise.
          </font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Article
          Nine of our charter eliminates in certain circumstances the monetary liability
          of our directors for a breach of their fiduciary duty as directors. These
          provisions do not eliminate the liability of a director: </font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;
          </font></div>
        <div>
          <table cellpadding="0" cellspacing="0" width="100%">

              <tr>
                <td align="left" valign="top" width="2%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">.
                    </font></div>
                </td>
                <td align="left" valign="top" width="51%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">for
                    a breach of the director's duty of loyalty to us or to our stockholders;
                    </font></div>
                </td>
                <td align="left" valign="middle" width="24%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;
                    </font></div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="top" width="2%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">.
                    </font></div>
                </td>
                <td align="left" colspan="2" valign="top" width="75%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">for
                    acts or omissions not in good faith or which involve intentional
                    misconduct or knowing violation of law; </font></div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="top" width="2%"><font size="2">.</font></td>
                <td align="left" colspan="2" valign="top" width="75%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">under
                    Section 174 of the Delaware General Corporation Law (relating
                    to the
                    declaration of dividends and purchase or redemption of shares
                    in violation
                    of the Delaware General Corporation Law); or </font></div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="top" width="2%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">.
                    </font></div>
                </td>
                <td align="left" colspan="2" valign="top" width="75%"><font size="2">for
                  transactions from which the director derived an improper personal
                  benefit.</font></td>
              </tr>

          </table>
        </div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">We
          have
          purchased directors and officer's liability insurance that would indemnify
          our
          directors and officers against damages arising out of certain kinds of
          claims
          that might be made against them based on their negligent acts or omissions
          while
          acting in their capacity as such. </font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Our
          policy is to enter into separate indemnification agreements with each of
          our
          directors and executive officers that provide the maximum indemnity allowed
          to
          directors and executive officers by Section&#160;145 of the Delaware General
          Corporation Law and which allow for certain additional procedural protections.
          </font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">The
          above
          discussion of our charter, by-laws, indemnification agreements and of Section
          145 of the Delaware General Corporation Law is not exhaustive and is qualified
          in its entirety by our charter, our by-laws and statute.</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><a name="eolPage6"/><a name="FIS_UNIDENTIFIED_TABLE_4"/><a name="Y12835SV8_HTM_006"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Item
          7. Exemption from Registration Claimed.</strong></font></a></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Not
          applicable.</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><a name="Y12835SV8_HTM_007"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Item
          8. Exhibits.</strong></font></a></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div>
          <table cellpadding="0" cellspacing="0" width="100%">

              <tr>
                <td align="left" valign="bottom" width="8%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="bottom" width="70%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="bottom" width="8%" style="border-bottom: black thin solid;">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Exhibit
                    No.</strong></font></div>
                </td>
                <td align="left" valign="bottom" width="70%" style="border-bottom: black thin solid;">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Description</strong></font></div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="top" width="8%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">4.1</font></div>
                </td>
                <td align="left" valign="top" width="70%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Form
                    of Common Stock Certificate of the Registrant (incorporated herein
                    by
                    reference to Exhibit 4.1 to the Registrant's Form S-3 (File No.
                    333-83551).</font></div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="top" width="8%">&#160;</td>
                <td align="left" valign="top" width="70%">&#160;</td>
              </tr>
              <tr>
                <td align="left" valign="top" width="8%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">4.2</font></div>
                </td>
                <td align="left" valign="top" width="70%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Rights
                    Agreement as amended and restated on May 18, 2005, between the
                    Registrant
                    and Mellon Investor Services, L.L.C., as Rights Agent (incorporated
                    herein
                    by reference to Exhibit 4.1 to the Registrant's Form 8-K dated
                    May 18,
                    2005).</font></div>
                </td>
              </tr>

          </table>
        </div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br>&#160;</div>
        <div id="PGBRK" style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
          <div id="FTR">
            <div id="GLFTR" style="MARGIN-LEFT: 0pt; WIDTH: 100%; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 8pt; COLOR: #000000; FONT-FAMILY: Times New Roman">2</font></div>
          </div>
          <div id="PN" style="PAGE-BREAK-AFTER: always">
            <div style="WIDTH: 100%; TEXT-ALIGN: center">
            </div>
            <div style="WIDTH: 100%; TEXT-ALIGN: center">
            </div>
          </div>
          <div id="HDR">
            <div id="GLHDR" style="WIDTH: 100%" align="right">
            </div>
          </div>
        </div>
        <div>
          <table cellpadding="0" cellspacing="0" width="100%">

              <tr>
                <td align="left" valign="top" width="8%">&#160;</td>
                <td align="left" valign="top" width="70%">&#160;</td>
              </tr>
              <tr>
                <td align="left" valign="top" width="8%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">5</font></div>
                </td>
                <td align="left" valign="top" width="70%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Opinion
                    and consent of Mark E. Schell, Esq.*</font></div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="top" width="8%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="top" width="70%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="top" width="8%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">23.1</font></div>
                </td>
                <td align="left" valign="top" width="70%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Consent
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                </td>
              </tr>
              <tr>
                <td align="left" valign="top" width="8%">&#160;</td>
                <td align="left" valign="top" width="70%">&#160;</td>
              </tr>
              <tr>
                <td align="left" valign="top" width="8%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">23.2</font></div>
                </td>
                <td align="left" valign="top" width="70%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Consent
                    of Mark E. Schell, Esq. (included in Exhibit 5).*</font></div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="top" width="8%">&#160;</td>
                <td align="left" valign="top" width="70%">&#160;</td>
              </tr>
              <tr>
                <td align="left" valign="top" width="8%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">23.3</font></div>
                </td>
                <td align="left" valign="top" width="70%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Consent
                    of Ryder Scott Company, L.P.*</font></div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="top" width="8%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="top" width="70%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="top" width="8%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">24</font></div>
                </td>
                <td align="left" valign="top" width="70%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Power
                    of Attorney (included on signature page).*</font></div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="top" width="8%">&#160;</td>
                <td align="left" valign="top" width="70%">&#160;</td>
              </tr>

          </table>
        </div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">______________</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 472.3pt" align="left"><br></div>
        <div>
          <table cellpadding="0" cellspacing="0" width="100%">

              <tr>
                <td align="left" valign="top" width="96%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">*
                    Filed herewith.</font></div>
                </td>
              </tr>

          </table>
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        <div>&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">The
          Plan
          is a 401(k) Profit Sharing Plan maintained by the Registrant. In lieu of
          filing
          an opinion of counsel or a determination letter from the Internal Revenue
          Service (&#8220;IRS&#8221;) as required by Item 601(b)(5)(ii) of Regulation S-K, in
          accordance with Item 8 to Form S-8, the undersigned Registrant undertakes
          to
          submit the Plan, as amended and restated to date, to the IRS to request
          a
          determination letter with respect to its form. The undersigned Registrant
          further undertakes to make such submission to the IRS in a timely manner
          and
          will further make all changes required by the IRS in order to cause the
          Plan to
          qualify under Section 401 of the Internal Revenue Code. </font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Item
          9. Undertakings.</strong></font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(a)
          The
          undersigned Registrant hereby undertakes:</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 36pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(1)
          To
          file, during any period in which offers or sales are being made, a
          post-effective amendment to this Registration Statement:</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 54pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(i)
          to
          include any prospectus required by Section 10(a)(3) of the Securities Act
          of
          1933;</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 54pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(ii)
          to
          reflect in the prospectus any facts or events arising after the effective
          date
          of the Registration Statement (or the most recent post-effective amendment
          thereof) which, individually or in the aggregate, represent a fundamental
          change
          in the information set forth in the Registration Statement. Notwithstanding
          the
          foregoing, any increase or decrease in volume of securities offered (if
          the
          total dollar value of securities offered would not exceed that which was
          registered) and any deviation from the low or high end of the estimated
          maximum
          offering range may be reflected in the form of prospectus filed with the
          Commission pursuant to Rule 424(b) if, in the aggregate, the changes in
          volume
          and price represent no more than a 20&#160;percent change in the maximum
          aggregate offering price set forth in the &#8220;Calculation of Registration Fee&#8221;
table in the effective Registration Statement;</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 54pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(iii)
          to
          include any material information with respect to the plan of distribution
          not
          previously disclosed in the Registration Statement or any material change
          to
          such information in the Registration Statement.</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><em>Provided,
          however,</em></font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">
          that
          paragraphs (a)(1)(i) and (a)(1)(ii) do not apply if the Registration Statement
          is on Form S-8 , and the information required to be included in a post-effective
          amendment by those paragraphs is contained in reports filed with or</font><a name="eolPage7"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">
          furnished to the Commission by the Registrant pursuant to Section&#160;13 or
          Section 15(d) of the Securities Exchange Act of 1934 that are incorporated
          by
          reference in the Registration Statement.</font></a></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 36pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(2)
          That,
          for the purpose of determining any liability under the Securities Act of
          1933,
          each such post-effective amendment shall be deemed to be a new Registration
          Statement relating to the securities offered therein, and the offering
          of such
          securities at that time shall be deemed to be the initial </font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><em>bona
          fide</em></font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">
          offering
          thereof.</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 36pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(3)
          To
          remove from registration by means of a post-effective amendment any of
          the
          securities being registered which remain unsold at the termination of the
          offering.</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(b)
          The
          undersigned Registrant hereby undertakes that, for purposes of determining
          any
          liability under the Securities Act of 1933, each filing of the Registrant&#8217;s
          annual report pursuant to Section 13(a) or 15(d) of the Securities Exchange
          Act
          of 1934 (and, where applicable, each filing of an employee benefit plan&#8217;s annual
          report pursuant to Section 15(d) of the Securities Exchange Act of 1934)
          that is
          incorporated by reference in the Registration Statement shall be deemed
          to</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
        <div id="PGBRK" style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
          <div id="FTR">
            <div id="GLFTR" style="MARGIN-LEFT: 0pt; WIDTH: 100%; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 8pt; COLOR: #000000; FONT-FAMILY: Times New Roman">3</font></div>
          </div>
          <div id="PN" style="PAGE-BREAK-AFTER: always">
            <div style="WIDTH: 100%; TEXT-ALIGN: center">
            </div>
            <div style="WIDTH: 100%; TEXT-ALIGN: center">
            </div>
          </div>
          <div id="HDR">
            <div id="GLHDR" style="WIDTH: 100%" align="right">
            </div>
          </div>
        </div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">be
          a new
          Registration Statement relating to the securities offered therein, and
          the
          offering of such securities at that time shall be deemed to be the initial
          </font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><em>bona
          fide</em></font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">
          offering
          thereof.</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(c)
          Insofar as indemnification for liabilities arising under the Securities
          Act of
          1933 may be permitted to directors, officers and controlling persons of
          the
          Registrant pursuant to the foregoing provisions, or otherwise, the Registrant
          has been advised that in the opinion of the Commission such indemnification
          is
          against public policy as expressed in the Securities Act of 1933 and is,
          therefore, unenforceable. In the event that a claim for indemnification
          against
          such liabilities (other than the payment by the Registrant of expenses
          incurred
          or paid by a director, officer or controlling person of the Registrant
          in the
          successful defense of any action, suit or proceeding) is asserted by such
          director, officer or controlling person in connection with the securities
          being
          registered, the Registrant will, unless in the opinion of its counsel the
          matter
          has been settled by controlling precedent, submit to a court of appropriate
          jurisdiction the question whether such indemnification by it is against
          public
          policy as expressed in the Securities Act of 1933 and will be governed
          by the
          final adjudication of such issue.</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div><br>
        <div id="PGBRK" style="MARGIN-LEFT: 0pt; WIDTH: 100%; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
          <div id="FTR">
            <div id="GLFTR" style="MARGIN-LEFT: 0pt; WIDTH: 100%; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 8pt; COLOR: #000000; FONT-FAMILY: Times New Roman">4</font></div>
          </div>
          <div id="PN" style="PAGE-BREAK-AFTER: always">
            <div style="WIDTH: 100%; TEXT-ALIGN: center">
            </div>
            <div style="WIDTH: 100%; TEXT-ALIGN: center">
            </div>
          </div>
          <div id="HDR">
            <div id="GLHDR" style="WIDTH: 100%" align="right">
            </div>
          </div>
        </div><br>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>SIGNATURES</strong></font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><em>The
          Registrant. </em></font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Pursuant
          to the requirements of the Securities Act of 1933, the Registrant certifies
          that
          it has reasonable grounds to believe that it meets all of the requirements
          for
          filing on Form S-8 and has duly caused this Registration Statement to be
          signed
          on its behalf by the undersigned, thereunto duly authorized, in the City
          of
          Tulsa, State of Oklahoma on this 6th day of October, 2006.</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div>
          <table cellpadding="0" cellspacing="0" width="100%">

              <tr>
                <td align="left" valign="middle" width="35%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="middle" width="4%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="middle" width="7%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="middle" width="27%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="top" width="35%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td align="left" colspan="3" valign="middle" width="37%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 2.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>UNIT
                    CORPORATION</strong></font></div>
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 2.8pt" align="left">&#160;</div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="middle" width="35%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="top" width="4%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">By:&#160;&#160;</font></div>
                </td>
                <td align="left" colspan="2" valign="middle" width="33%" style="border-bottom: #ffffff thin solid;">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 1.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><u>/s/
                    Mark E. Schell</u>&#160;</font></div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="middle" width="35%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="middle" width="4%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="top" width="7%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Name:&#160;&#160;</font></div>
                </td>
                <td align="left" valign="middle" width="27%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 1.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Mark
                    E. Schell</font></div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="middle" width="35%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="middle" width="4%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="top" width="7%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Title:&#160;&#160;</font></div>
                </td>
                <td align="left" valign="middle" width="27%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Senior
                    Vice President and</font></div>
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">General
                    Counsel&#160;</font></div>
                </td>
              </tr>

          </table>
        </div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><a name="FIS_POWER_OF_ATTORNEY"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>POWER
          OF ATTORNEY</strong></font></a></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">KNOW
          ALL
          PERSONS BY THESE PRESENTS, that each person whose signature appears below
          hereby
          constitutes and appoints Mark E. Schell and Larry D. Pinkston, and each
          of them,
          such person&#8217;s true and lawful attorneys-in-fact and agents, with full power of
          substitution and resubstitution, for and in such person&#8217;s name, place and stead,
          in the capacities indicated below, to sign a Registration Statement on
          Form S-8
          of Unit Corporation and any and all amendments (including post-effective
          amendments) thereto, and to file or cause to be filed the same, with all
          exhibits thereto, and other documents in connection therewith, with the
          Securities and Exchange Commission, granting unto said attorneys-in-fact
          and
          agents, full power and authority to do and perform each and every act and
          thing
          requisite and necessary to be done in connection therewith, as fully to
          all
          intents and purposes as such person might, or could, do in person, hereby
          ratifying and confirming all that said attorneys-in-fact and agents, or
          his
          substitute or substitutes, may lawfully do or cause to be done by virtue
          hereof.</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Pursuant
          to the requirements of the Securities Act of 1933, this Registration Statement
          has been signed by the following persons in the capacities and on the date
          indicated.</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
        <div>
          <table cellpadding="0" cellspacing="0" width="100%">

              <tr>
                <td align="left" valign="top" width="22%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Name</font></div>
                </td>
                <td align="left" valign="top" width="24%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 54pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Title</font></div>
                </td>
                <td align="left" valign="top" width="24%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 54pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Date</font></div>
                </td>
              </tr>
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                <td align="left" valign="top" width="24%">&#160;</td>
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                <td align="left" valign="top" width="24%">&#160;</td>
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                <td align="left" valign="top" width="24%">&#160;</td>
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              <tr>
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                <td align="left" valign="top" width="24%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
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              <tr>
                <td align="left" valign="top" width="22%">&#160;</td>
                <td align="left" valign="top" width="24%">
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              </tr>
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                <td align="left" valign="top" width="22%">
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              </tr>
              <tr>
                <td align="left" valign="top" width="22%">
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                <td align="left" valign="top" width="24%">&#160;</td>
              </tr>
              <tr>
                <td align="left" valign="top" width="22%">
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              <tr>
                <td align="left" valign="top" width="22%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
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              <tr>
                <td align="left" valign="top" width="22%">&#160;</td>
                <td align="left" valign="top" width="24%">
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              </tr>
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                <td align="left" valign="top" width="22%">
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              <tr>
                <td align="left" valign="top" width="22%">
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                <td align="left" valign="top" width="24%">&#160;</td>
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                <td align="left" valign="top" width="22%">
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                <td align="left" valign="top" width="24%">&#160;</td>
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                <td align="left" valign="top" width="24%">&#160;</td>
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              <tr>
                <td align="left" valign="top" width="22%">&#160;</td>
                <td align="left" valign="top" width="24%">
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              <tr>
                <td align="left" valign="top" width="22%">
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                <td align="left" valign="top" width="24%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
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              <tr>
                <td align="left" valign="top" width="22%">
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                <td align="left" valign="top" width="24%">&#160;</td>
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              <tr>
                <td align="left" valign="top" width="22%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
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              <tr>
                <td align="left" valign="top" width="22%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
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              <tr>
                <td align="left" valign="top" width="22%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">/s/
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              </tr>
              <tr>
                <td align="left" valign="top" width="22%">
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                <td align="left" valign="top" width="24%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
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              <tr>
                <td align="left" valign="top" width="22%">
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                <td align="left" valign="top" width="24%">&#160;</td>
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              <tr>
                <td align="left" valign="top" width="22%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
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              <tr>
                <td align="left" valign="top" width="22%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
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              <tr>
                <td align="left" valign="top" width="22%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
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                <td align="left" valign="top" width="24%">
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                </td>
              </tr>
              <tr>
                <td align="left" valign="top" width="22%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">------------------------------------</font></div>
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                <td align="left" valign="top" width="24%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
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              <tr>
                <td align="left" valign="top" width="22%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Don
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                <td align="left" valign="top" width="24%">&#160;</td>
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              <tr>
                <td align="left" valign="top" width="22%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
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              <tr>
                <td align="left" valign="top" width="22%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
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              </tr>
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                <td align="left" valign="top" width="22%">
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                <td align="left" valign="top" width="24%">&#160;</td>
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              <tr>
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                <td align="left" valign="top" width="24%">&#160;</td>
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              <tr>
                <td align="left" valign="top" width="22%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
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              <tr>
                <td align="left" valign="top" width="22%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
              </tr>
              <tr>
                <td align="left" valign="top" width="22%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="top" width="24%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
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                <td align="left" valign="top" width="22%">
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              </tr>
              <tr>
                <td align="left" valign="top" width="22%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">King
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                <td align="left" valign="top" width="24%">&#160;</td>
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              <tr>
                <td align="left" valign="top" width="22%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
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              <tr>
                <td align="left" valign="top" width="22%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
              </tr>
              <tr>
                <td align="left" valign="top" width="22%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">/s/
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              </tr>
              <tr>
                <td align="left" valign="top" width="22%">
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                <td align="left" valign="top" width="24%">&#160;</td>
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              <tr>
                <td align="left" valign="top" width="22%">
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                <td align="left" valign="top" width="24%">&#160;</td>
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              <tr>
                <td align="left" valign="top" width="22%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
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              <tr>
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                <td align="left" valign="top" width="24%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
              </tr>
              <tr>
                <td align="left" valign="top" width="22%">
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              </tr>
              <tr>
                <td align="left" valign="top" width="22%">
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                <td align="left" valign="top" width="24%">&#160;</td>
              </tr>
              <tr>
                <td align="left" valign="top" width="22%">
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                <td align="left" valign="top" width="24%">&#160;</td>
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              <tr>
                <td align="left" valign="top" width="22%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
              </tr>
              <tr>
                <td align="left" valign="top" width="22%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
              </tr>
              <tr>
                <td align="left" valign="top" width="22%">
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                    6, 2006</font></div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="top" width="22%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">------------------------------------</font></div>
                </td>
                <td align="left" valign="top" width="24%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
              </tr>
              <tr>
                <td align="left" valign="top" width="22%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">John
                    H. Williams</font></div>
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                <td align="left" valign="top" width="24%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
              </tr>
              <tr>
                <td align="left" valign="top" width="22%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
                <td align="left" valign="top" width="24%">&#160;</td>
              </tr>

          </table>
        </div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
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          Plan.</em></font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">
          Pursuant
          to the requirements of the Securities Act of 1933, the persons who administer
          the Plan have duly caused this Registration Statement to be signed on its
          behalf
          by the undersigned, thereunto duly authorized, in the City of Tulsa, State
          of
          Oklahoma on this 6th day of October, 2006. </font></div>
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        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Unit
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        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">By:
          Unit
          Corporation, as Administrator of the Plan</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">By:
          </font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><u>/s/
          Mark E. Schell</u></font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;
          Name: Mark E. Schell</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;
          Title: Senior Vice President and </font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;
          General Counsel</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><br></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div id="PGBRK" style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
          <div id="FTR">
            <div id="GLFTR" style="MARGIN-LEFT: 0pt; WIDTH: 100%; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 8pt; COLOR: #000000; FONT-FAMILY: Times New Roman">6</font></div>
          </div>
          <div id="PN" style="PAGE-BREAK-AFTER: always">
            <div style="WIDTH: 100%; TEXT-ALIGN: center">
            </div>
            <div style="WIDTH: 100%; TEXT-ALIGN: center">
            </div>
          </div>
          <div id="HDR">
            <div id="GLHDR" style="WIDTH: 100%" align="right">
            </div>
          </div>
        </div><br>
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          INDEX</strong></font></a><a name="FIS_UNIDENTIFIED_TABLE_5"/></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div>
          <table cellpadding="0" cellspacing="0" width="100%">

              <tr>
                <td align="left" valign="bottom" width="8%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="bottom" width="71%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="bottom" width="8%" style="border-bottom: black thin solid;">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Exhibit
                    No.</strong></font></div>
                </td>
                <td align="left" valign="bottom" width="71%" style="border-bottom: black thin solid;">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Description</strong></font></div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="top" width="8%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">4.1</font></div>
                </td>
                <td align="left" valign="top" width="71%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Form
                    of Common Stock Certificate of the Registrant (incorporated herein
                    by
                    reference to Exhibit 4.1 to the Registrant's Form S-3 (File No.
                    333-83551).</font></div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="top" width="8%">&#160;</td>
                <td align="left" valign="top" width="71%">&#160;</td>
              </tr>
              <tr>
                <td align="left" valign="top" width="8%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">4.2</font></div>
                </td>
                <td align="left" valign="top" width="71%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;Rights
                    Agreement as amended and restated on May 18, 2005, between the
                    Registrant
                    and Mellon Investor Services, L.L.C., as Rights Agent (incorporated
                    herein
                    by reference to Exhibit 4.1 to the Registrant's Form 8-K dated
                    May 18,
                    2005).</font></div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="top" width="8%">&#160;</td>
                <td align="left" valign="top" width="71%">&#160;</td>
              </tr>
              <tr>
                <td align="left" valign="top" width="8%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">5</font></div>
                </td>
                <td align="left" valign="top" width="71%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Opinion
                    and consent of Mark E. Schell, Esq.*</font></div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="top" width="8%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="top" width="71%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="top" width="8%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">23.1</font></div>
                </td>
                <td align="left" valign="top" width="71%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Consent
                    of PricewaterhouseCoopers LLP.*</font></div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="top" width="8%">&#160;</td>
                <td align="left" valign="top" width="71%">&#160;</td>
              </tr>
              <tr>
                <td align="left" valign="top" width="8%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">23.2</font></div>
                </td>
                <td align="left" valign="top" width="71%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Consent
                    of Mark E. Schell, Esq. (included in Exhibit 5).*</font></div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="top" width="8%">&#160;</td>
                <td align="left" valign="top" width="71%">&#160;</td>
              </tr>
              <tr>
                <td align="left" valign="top" width="8%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">23.3</font></div>
                </td>
                <td align="left" valign="top" width="71%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Consent
                    of Ryder Scott Company, L.P.*</font></div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="top" width="8%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
                <td align="left" valign="top" width="71%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left">&#160;</div>
                </td>
              </tr>
              <tr>
                <td align="left" valign="top" width="8%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">24</font></div>
                </td>
                <td align="left" valign="top" width="71%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Power
                    of Attorney (included on signature
                    page).*</font></div>
                </td>
              </tr>

          </table>
        </div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">___________________</div>
        <div>
          <table cellpadding="0" cellspacing="0" width="100%">

              <tr>
                <td align="left" valign="middle" width="17%">&#160;</td>
              </tr>
              <tr>
                <td align="left" valign="top" width="17%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0.8pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">*
                    Filed herewith.</font></div>
                </td>
              </tr>

          </table>
        </div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
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[{"type": "S-8", "sequence": "1", "filename": "forms810062006.htm", "description": "FORM 3-8", "secsgml_size_bytes": 174853}]
{"company-data": {"conformed-name": "UNIT CORP", "cik": "0000798949", "assigned-sic": "1311", "irs-number": "731283193", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-137857", "film-number": "061133073"}, "business-address": {"street1": "1000 KENSINGTON TOWER", "street2": "7130 SO LEWIS STE 1000", "city": "TULSA", "state": "OK", "zip": "74136", "phone": "9184937700"}, "mail-address": {"street1": "1000 KENSINGTON TOWER", "street2": "7130 SO LEWIS STE 1000", "city": "TULSA", "state": "OK", "zip": "74136"}}
Unassociated Document
As
          filed with the Securities and Exchange Commission on October 6,
          2006
Registration
          No. 333-
UNITED
          STATES
SECURITIES
          AND EXCHANGE COMMISSION
Washington,
          D.C. 20549
_________________________
FORM
          S-8
REGISTRATION
          STATEMENT UNDER THE SECURITIES ACT OF 1933
____________________________
UNIT
          CORPORATION
(Exact
          Name of Registrant as Specified in Its Charter)
Delaware
73-1283193
(State
                    or Other Jurisdiction of
(I.R.S.
                    Employer Identification No.)
Incorporation
                    or Organization)
7130
                    South Lewis, Suite 1000
Tulsa,
                    Oklahoma
74136
(Address
                    of Principal Executive Offices)
(Zip
                    Code)
_____________________________
Unit
          Corporation Employees' Thrift Plan
(Full
          Title of the Plan)
_____________________________
Mark
                    E. Schell
Copy
                    to:
Senior
                    Vice President and General Counsel
Unit
                    Corporation
Robert
                    J. Melgaard, Esq.
7130
                    South Lewis, Suite 1000
Conner
                    & Winters, LLP
Tulsa,
                    Oklahoma 74136
4000
                    One Williams Center
(Name
                    and Address of Agent for Service)
Tulsa,
                    Oklahoma 74172-0148
(918)
                    586 -8973
(918) 493-7700
(Telephone
                    Number, Including Area Code, of Agent For
Service)
_____________________________
CALCULATION
          OF REGISTRATION FEE
Proposed
Maximum
Proposed
Amount
Offering
Maximum
Amount
                    of
Title
                    Of Each Class Of Securities
To
                    Be
Price
Aggregate
Registration
To
                    Be Registered
Registered
(1)
Per
                    Share
Offering
                    Price
Fee
Common
                    Stock, par value $0.20 per share(3)
1,500,000
$43.88
(2)
$
                    65,820,000
(2)
$7,042.74
(1)
This
                    Registration Statement covers shares to be acquired by the Trustee
                    pursuant to the Unit Corporation Employees' Thrift Plan (the "Plan") for
                    the accounts of Plan participants. In addition, pursuant to Rule
                    416(c)
                    under the Securities Act of 1933, as amended, this Registration
                    Statement
                    also covers an indeterminate amount of interests to be offered
                    or sold
                    pursuant to the Plan. This Registration Statement further includes
                    an
                    indeterminate number of additional shares that may be issued
                    to adjust the
                    number of shares issued pursuant to the Plan as the result of
                    any future
                    stock dividend, stock split or similar adjustment of the outstanding
                    shares of Common Stock of the Registrant.
(2)
Calculated
                    solely for purposes of this offering under Rule 457(h) of the
                    Securities
                    Act of 1933, as amended, on the basis of the average of the high
                    and low
                    selling prices per share of Common Stock of the Registrant on
                    October 5,
                    2006, as reported on the New York Stock Exchange.
(3)
Each
                    share of Common Stock of the Registrant is accompanied by a preferred
                    share purchase right under the Rights Agreement as amended and
                    restated on
                    May 18, 2005, between the Registrant and Mellon Investor Services,
                    L.L.C,
                    as Rights Agent.
TABLE
          OF CONTENTS
PART
                    I
1
PART
                    II
1
Item
                    3. Incorporation of Documents by Reference
1
Item
                    4. Description of Securities
1
Item
                    5. Interests of Named Experts and Counsel
2
Item
                    6. Indemnification of Directors and Officers
2
Item
                    7. Exemption from Registration Claimed
2
Item
                    8. Exhibits
2
Item
                    9. Undertakings
3
SIGNATURES
5
EXHIBIT
                    INDEX
7
EX-5:
                    OPINION AND CONSENT OF MARK E. SCHELL, ESQ.
EX-23.1:
                    CONSENT OF PRICEWATERHOUSECOOPERS LLP
EX-23.3:
                    CONSENT OF RYDER SCOTT COMPANY
PART
          I
INFORMATION
          REQUIRED IN THE SECTION 10(A) PROSPECTUS
The
          documents containing the information specified in Part I of Form S-8 have
          previously been, or will be, sent or given to Plan participants as specified
          by
          Rule 428(b)(1) of the Securities Act of 1933, as amended. Such documents
          are not
          required to be and are not filed with the Securities and Exchange Commission
          (the "Commission") either as part of this Registration Statement or as
          prospectuses or prospectus supplements pursuant to Rule 424. These documents
          and
          the documents incorporated by reference in this Registration Statement
          pursuant
          to Item 3 of Part II of this Form S-8, taken together, constitute a prospectus
          that meets the requirements of Section 10(a) of the Securities Act of
          1933.
PART
          II
INFORMATION
          REQUIRED IN THE REGISTRATION STATEMENT
Item
          3. Incorporation of Documents by Reference
.
The
          following documents filed with the Commission by Unit Corporation, a Delaware
          corporation (the "Company" or the "Registrant"), or the Unit Corporation
          Employees' Thrift Plan (the "Plan"), as the case may be, are incorporated
          by
          reference herein:
(a)
the
                    Company's Annual Report on Form 10-K for the fiscal year ended December
                    31, 2005, filed with the Commission on March 13, 2006;
(b)
the
                    Company's Quarterly Reports on Form 10-Q for the fiscal quarters ended
                    March 31, 2006 and June 30, 2006, filed with the Commission on
                    May 5, 2006
                    and August 8, 2006, respectively;
(c)
the
                    Company's Current Reports on Form 8-K, filed with the Commission
                    on
                    January 17, 2006; February 8, 2006; April 18, 2006; May 9, 2006;
                    and
                    October 3, 2006;
(d)
the
                    Plan's Annual Report on Form 11-K for the year ended December 31,
                    2005,
                    filed with the Commission on June 29, 2006;
(e)
the
                    description of the Registrant's common stock set forth in the Registrant's
                    Registration Statement on Amended Form 8-B, dated October 7,
                    1986, filed
                    with the Commission, including any amendment or report heretofor
                    or
                    hereafter filed for the purpose of updating the description;
                    and
(f)
the
                    description of rights to purchase preferred stock contained in
                    the
                    Registrant's Registration Statement on Form 8-A/A, filed with
                    the
                    Commission on May 23, 2005, including any amendment or report
                    heretofor or
                    hereafter filed for the purpose of updating the
                    description.
All
          documents filed by the Registrant or the Plan pursuant to Sections 13(a),
          13(c),
          14 and 15(d) of the Securities Exchange Act of 1934 (other than current
          reports
          or portions thereof furnished under Item 2.02 or 7.01 of Form 8-K), subsequent
          to the effective date of this Registration Statement and prior to the filing
          of
          a post-effective amendment to this Registration Statement indicating that
          all
          securities offered hereby have been sold or deregistering all securities
          then
          remaining unsold, shall be deemed to be incorporated by reference herein
          and to
          be part hereof from the date of filing of such documents. Any statement
          contained in any document incorporated or deemed to be incorporated by
          reference
          herein shall be deemed to be modified or superseded for purposes of this
          Registration Statement to the extent that a statement in any other subsequently
          filed document which also is or is deemed to be incorporated by reference
          herein
          modifies or supersedes such statement. Any such statement so modified or
          superseded shall not be deemed to constitute a part of this Registration
          Statement, except as so modified or superseded.
Item
          4. Description of Securities.
Not
          applicable.
1
Item
          5. Interests of Named Experts and Counsel.
Mark
          E.
          Schell, General Counsel of the Company, as our counsel, will issue an opinion
          for us regarding the validity of the shares of common stock offered by
          this
          Registration Statement. Mark E. Schell beneficially owns 73,750 shares
          of our
          common stock.
Item
          6. Indemnification of Directors and Officers.
Article
          4
          of our by-laws provides for indemnification of any person who is, or is
          threatened to be made, a witness in or a party to any proceeding by reason
          of
          his or her position as a director, officer, or employee, to the extent
          authorized by applicable law including, but not limited to, the Delaware
          General
          Corporation Law. Under Section 145 of the Delaware General Corporation
          Law, a
          corporation generally has the power to indemnify its present and former
          directors, officers, employees and agents against expenses and liabilities
          incurred by them in connection with any suit to which they are, or are
          threatened to be made, a party by reason of their serving in such positions
          so
          long as they acted in good faith and in a manner they reasonably believed
          to be
          in, or not opposed to, the best interests of the corporation, and with
          respect
          to any criminal action, they had no reasonable cause to believe their conduct
          was unlawful. With respect to suits by or in the right of a corporation,
          however, indemnification is generally limited to attorney's fees and other
          expenses and is not available if such person is adjudged to be liable to
          the
          corporation unless the court determines that indemnification is appropriate.
          In
          addition, a corporation has the power to purchase and maintain insurance
          for
          such persons. Article 4 of our by-laws also expressly provides that the
          power to
          indemnify authorized thereby is not exclusive of any rights granted to
          present
          and former directors, officers, employees and agents, under any bylaw,
          agreement, vote of stockholders or disinterested directors, or otherwise.
Article
          Nine of our charter eliminates in certain circumstances the monetary liability
          of our directors for a breach of their fiduciary duty as directors. These
          provisions do not eliminate the liability of a director:
.
for
                    a breach of the director's duty of loyalty to us or to our stockholders;
.
for
                    acts or omissions not in good faith or which involve intentional
                    misconduct or knowing violation of law;
.
under
                    Section 174 of the Delaware General Corporation Law (relating
                    to the
                    declaration of dividends and purchase or redemption of shares
                    in violation
                    of the Delaware General Corporation Law); or
.
for
                  transactions from which the director derived an improper personal
                  benefit.
We
          have
          purchased directors and officer's liability insurance that would indemnify
          our
          directors and officers against damages arising out of certain kinds of
          claims
          that might be made against them based on their negligent acts or omissions
          while
          acting in their capacity as such.
Our
          policy is to enter into separate indemnification agreements with each of
          our
          directors and executive officers that provide the maximum indemnity allowed
          to
          directors and executive officers by Section 145 of the Delaware General
          Corporation Law and which allow for certain additional procedural protections.
The
          above
          discussion of our charter, by-laws, indemnification agreements and of Section
          145 of the Delaware General Corporation Law is not exhaustive and is qualified
          in its entirety by our charter, our by-laws and statute.
Item
          7. Exemption from Registration Claimed.
Not
          applicable.
Item
          8. Exhibits.
Exhibit
                    No.
Description
4.1
Form
                    of Common Stock Certificate of the Registrant (incorporated herein
                    by
                    reference to Exhibit 4.1 to the Registrant's Form S-3 (File No.
                    333-83551).
4.2
Rights
                    Agreement as amended and restated on May 18, 2005, between the
                    Registrant
                    and Mellon Investor Services, L.L.C., as Rights Agent (incorporated
                    herein
                    by reference to Exhibit 4.1 to the Registrant's Form 8-K dated
                    May 18,
                    2005).
2
5
Opinion
                    and consent of Mark E. Schell, Esq.*
23.1
Consent
                    of PricewaterhouseCoopers LLP.*
23.2
Consent
                    of Mark E. Schell, Esq. (included in Exhibit 5).*
23.3
Consent
                    of Ryder Scott Company, L.P.*
24
Power
                    of Attorney (included on signature page).*
______________
*
                    Filed herewith.
The
          Plan
          is a 401(k) Profit Sharing Plan maintained by the Registrant. In lieu of
          filing
          an opinion of counsel or a determination letter from the Internal Revenue
          Service ("IRS") as required by Item 601(b)(5)(ii) of Regulation S-K, in
          accordance with Item 8 to Form S-8, the undersigned Registrant undertakes
          to
          submit the Plan, as amended and restated to date, to the IRS to request
          a
          determination letter with respect to its form. The undersigned Registrant
          further undertakes to make such submission to the IRS in a timely manner
          and
          will further make all changes required by the IRS in order to cause the
          Plan to
          qualify under Section 401 of the Internal Revenue Code.
Item
          9. Undertakings.
(a)
          The
          undersigned Registrant hereby undertakes:
(1)
          To
          file, during any period in which offers or sales are being made, a
          post-effective amendment to this Registration Statement:
(i)
          to
          include any prospectus required by Section 10(a)(3) of the Securities Act
          of
          1933;
(ii)
          to
          reflect in the prospectus any facts or events arising after the effective
          date
          of the Registration Statement (or the most recent post-effective amendment
          thereof) which, individually or in the aggregate, represent a fundamental
          change
          in the information set forth in the Registration Statement. Notwithstanding
          the
          foregoing, any increase or decrease in volume of securities offered (if
          the
          total dollar value of securities offered would not exceed that which was
          registered) and any deviation from the low or high end of the estimated
          maximum
          offering range may be reflected in the form of prospectus filed with the
          Commission pursuant to Rule 424(b) if, in the aggregate, the changes in
          volume
          and price represent no more than a 20 percent change in the maximum
          aggregate offering price set forth in the "Calculation of Registration Fee"
table in the effective Registration Statement;
(iii)
          to
          include any material information with respect to the plan of distribution
          not
          previously disclosed in the Registration Statement or any material change
          to
          such information in the Registration Statement.
Provided,
          however,
that
          paragraphs (a)(1)(i) and (a)(1)(ii) do not apply if the Registration Statement
          is on Form S-8 , and the information required to be included in a post-effective
          amendment by those paragraphs is contained in reports filed with or
furnished to the Commission by the Registrant pursuant to Section 13 or
          Section 15(d) of the Securities Exchange Act of 1934 that are incorporated
          by
          reference in the Registration Statement.
(2)
          That,
          for the purpose of determining any liability under the Securities Act of
          1933,
          each such post-effective amendment shall be deemed to be a new Registration
          Statement relating to the securities offered therein, and the offering
          of such
          securities at that time shall be deemed to be the initial
bona
          fide
offering
          thereof.
(3)
          To
          remove from registration by means of a post-effective amendment any of
          the
          securities being registered which remain unsold at the termination of the
          offering.
(b)
          The
          undersigned Registrant hereby undertakes that, for purposes of determining
          any
          liability under the Securities Act of 1933, each filing of the Registrant's
          annual report pursuant to Section 13(a) or 15(d) of the Securities Exchange
          Act
          of 1934 (and, where applicable, each filing of an employee benefit plan's annual
          report pursuant to Section 15(d) of the Securities Exchange Act of 1934)
          that is
          incorporated by reference in the Registration Statement shall be deemed
          to
3
be
          a new
          Registration Statement relating to the securities offered therein, and
          the
          offering of such securities at that time shall be deemed to be the initial
bona
          fide
offering
          thereof.
(c)
          Insofar as indemnification for liabilities arising under the Securities
          Act of
          1933 may be permitted to directors, officers and controlling persons of
          the
          Registrant pursuant to the foregoing provisions, or otherwise, the Registrant
          has been advised that in the opinion of the Commission such indemnification
          is
          against public policy as expressed in the Securities Act of 1933 and is,
          therefore, unenforceable. In the event that a claim for indemnification
          against
          such liabilities (other than the payment by the Registrant of expenses
          incurred
          or paid by a director, officer or controlling person of the Registrant
          in the
          successful defense of any action, suit or proceeding) is asserted by such
          director, officer or controlling person in connection with the securities
          being
          registered, the Registrant will, unless in the opinion of its counsel the
          matter
          has been settled by controlling precedent, submit to a court of appropriate
          jurisdiction the question whether such indemnification by it is against
          public
          policy as expressed in the Securities Act of 1933 and will be governed
          by the
          final adjudication of such issue.
4
SIGNATURES
The
          Registrant.
Pursuant
          to the requirements of the Securities Act of 1933, the Registrant certifies
          that
          it has reasonable grounds to believe that it meets all of the requirements
          for
          filing on Form S-8 and has duly caused this Registration Statement to be
          signed
          on its behalf by the undersigned, thereunto duly authorized, in the City
          of
          Tulsa, State of Oklahoma on this 6th day of October, 2006.
UNIT
                    CORPORATION
By:
/s/
                    Mark E. Schell
Name:
Mark
                    E. Schell
Title:
Senior
                    Vice President and
General
                    Counsel
POWER
          OF ATTORNEY
KNOW
          ALL
          PERSONS BY THESE PRESENTS, that each person whose signature appears below
          hereby
          constitutes and appoints Mark E. Schell and Larry D. Pinkston, and each
          of them,
          such person's true and lawful attorneys-in-fact and agents, with full power of
          substitution and resubstitution, for and in such person's name, place and stead,
          in the capacities indicated below, to sign a Registration Statement on
          Form S-8
          of Unit Corporation and any and all amendments (including post-effective
          amendments) thereto, and to file or cause to be filed the same, with all
          exhibits thereto, and other documents in connection therewith, with the
          Securities and Exchange Commission, granting unto said attorneys-in-fact
          and
          agents, full power and authority to do and perform each and every act and
          thing
          requisite and necessary to be done in connection therewith, as fully to
          all
          intents and purposes as such person might, or could, do in person, hereby
          ratifying and confirming all that said attorneys-in-fact and agents, or
          his
          substitute or substitutes, may lawfully do or cause to be done by virtue
          hereof.
Pursuant
          to the requirements of the Securities Act of 1933, this Registration Statement
          has been signed by the following persons in the capacities and on the date
          indicated.
Name
Title
Date
/s/
                    John G. Nikkel
Chairman
                    of the Board and
Director
October
                    6, 2006
------------------------------------
John
                    G. Nikkel
President,
                    Chief Executive
Officer,
                    Chief Operating
Officer
                    and Director
October
                    6, 2006
/s/
                    Larry D. Pinkston
(Principal
                    Executive Officer)
------------------------------------
Larry
                    D. Pinkston
Chief
                    Financial Officer and
Treasurer
October
                    6, 2006
/s/
                    David T. Merrill
(Principal
                    Financial Officer)
------------------------------------
David
                    T. Merrill
5
Controller
October
                    6, 2006
/s/
                    Stanley W. Belitz
(Principal
                    Accounting Officer)
------------------------------------
Stanley
                    W. Belitz
/s/
                    J. Michael Adcock
Director
October
                    6, 2006
------------------------------------
J.
                    Michael Adcock
Director
October
                    6, 2006
------------------------------------
Don
                    Cook
/s/
                    Gary R. Christopher
Director
October
                    6, 2006
------------------------------------
Gary
                    R. Christopher
------------------------------------
Director
October
                    6, 2006
King
                    P. Kirchner
/s/
                    William B. Morgan
Director
October
                    6, 2006
------------------------------------
William
                    B. Morgan
/s/
                    Robert J. Sullivan, Jr.
Director
October
                    6, 2006
------------------------------------
Robert
                    J. Sullivan, Jr.
/s/
                    John H. Williams
Director
October
                    6, 2006
------------------------------------
John
                    H. Williams
The
          Plan.
Pursuant
          to the requirements of the Securities Act of 1933, the persons who administer
          the Plan have duly caused this Registration Statement to be signed on its
          behalf
          by the undersigned, thereunto duly authorized, in the City of Tulsa, State
          of
          Oklahoma on this 6th day of October, 2006.
Unit
          Corporation Employees' Thrift Plan
By:
          Unit
          Corporation, as Administrator of the Plan
By:
/s/
          Mark E. Schell
Name: Mark E. Schell
Title: Senior Vice President and
General Counsel
6
EXHIBIT
          INDEX
Exhibit
                    No.
Description
4.1
Form
                    of Common Stock Certificate of the Registrant (incorporated herein
                    by
                    reference to Exhibit 4.1 to the Registrant's Form S-3 (File No.
                    333-83551).
4.2
Rights
                    Agreement as amended and restated on May 18, 2005, between the
                    Registrant
                    and Mellon Investor Services, L.L.C., as Rights Agent (incorporated
                    herein
                    by reference to Exhibit 4.1 to the Registrant's Form 8-K dated
                    May 18,
                    2005).
5
Opinion
                    and consent of Mark E. Schell, Esq.*
23.1
Consent
                    of PricewaterhouseCoopers LLP.*
23.2
Consent
                    of Mark E. Schell, Esq. (included in Exhibit 5).*
23.3
Consent
                    of Ryder Scott Company, L.P.*
24
Power
                    of Attorney (included on signature
                    page).*
___________________
*
                    Filed herewith.
7