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<P align="center" style="font-size: 10pt">As filed with the
Securities and Exchange Commission on May 6, 2005


<P align="right" style="font-size: 10pt"><B>Registration No.&nbsp;333-</B>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;



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<P align="center" style="font-size: 14pt"><B>SECURITIES AND EXCHANGE COMMISSION</B>

<DIV align="center" style="font-size: 12pt"><B>WASHINGTON, D.C. 20549</B>
</DIV>

<P align="center" style="font-size: 18pt"><B>FORM S-8</B>


<P align="center" style="font-size: 12pt"><B>REGISTRATION STATEMENT<BR>
UNDER<BR>
THE SECURITIES ACT OF 1933</B>

<P align="center" style="font-size: 10pt"><HR size="1" noshade width="26%" align="center" color="#000000">

<P align="center" style="font-size: 22pt"><B>POTASH CORPORATION OF SASKATCHEWAN INC.</B>


<DIV align="center" style="font-size: 10pt">(Exact name of registrant as specified in its charter<B>)</B></DIV>



<P align="center" style="font-size: 10pt"><B>Canada</B><BR>
(State or other jurisdiction of incorporation or organization)



<P align="center" style="font-size: 10pt"><B>N/A</B><BR>
(I.R.S. Employer Identification No.)



<P align="center" style="font-size: 10pt"><B>122 &#150; 1</B><SUP style="font-size: 85%; vertical-align: text-top"><B>st </B></SUP><B>Avenue South<BR>
Saskatoon, Saskatchewan, Canada S7K 7G3<BR>
306-933-8500<BR>
(</B>Address, including zip code, and telephone number of registrant&#146;s principal executive offices)



<P align="center" style="font-size: 10pt"><HR size="1" noshade width="26%" align="center" color="#000000">



<P align="center" style="font-size: 10pt"><B>POTASH CORPORATION OF SASKATCHEWAN INC.<BR>
2005 PERFORMANCE OPTION PLAN<BR>
(Full Titles of the Plans)</B>



<P align="center" style="font-size: 10pt"><HR size="1" noshade width="26%" align="center" color="#000000">



<P align="center" style="font-size: 10pt"><B>William J. Doyle<BR>
Potash Corporation of Saskatchewan Inc.<BR>
122 &#150; 1<SUP style="font-size: 85%; vertical-align: text-top">st</SUP> Avenue South<BR>
Saskatoon, Saskatchewan, Canada S7K 7G3<BR>
306-933-8500<BR>
(Name, Address, and Telephone Number, Including Area Code, of Agent for Service)</B>



<P align="center" style="font-size: 10pt"><HR size="1" noshade width="26%" align="center" color="#000000">



<P align="center" style="font-size: 10pt"><B>with copies to:</B><BR>
Craig Brod, Esq.<BR>
Cleary, Gottlieb, Steen &#038; Hamilton<BR>
One Liberty Plaza<BR>
New York, NY 10006<BR>
(212)&nbsp;225-2000



<P align="center" style="font-size: 10pt"><B>CALCULATION OF REGISTRATION FEE</B>


<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
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    <TD width="1%">&nbsp;</TD>
    <TD width="18%">&nbsp;</TD>

    <TD width="1%">&nbsp;</TD>
</TR><TR style="font-size: 1px" valign="bottom">
    <TD nowrap align="left" colspan="17" style="border-bottom: 1px solid #000000">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%" style="border-left: 1px solid #000000">&nbsp;</TD>

    <TD nowrap align="center"><B>Title of Securities</B></TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>Amount</B></TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>Proposed Maximum</B></TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>Proposed Maximum</B></TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>Amount of</B></TD>
    <TD width="1%" style="border-right: 1px solid #000000">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%" style="border-left: 1px solid #000000">&nbsp;</TD>

    <TD nowrap align="center"><B>to be</B></TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>to be</B></TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>Offering Price Per</B></TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>Aggregate Offering</B></TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>Registration</B></TD>
    <TD width="1%" style="border-right: 1px solid #000000">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%" style="border-left: 1px solid #000000">&nbsp;</TD>

    <TD nowrap align="center"><B>Registered (2)</B></TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>Registered (1)</B></TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>Share (2)</B></TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>Price</B></TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>Fee (2)</B></TD>
    <TD width="1%" style="border-right: 1px solid #000000">&nbsp;</TD>
</TR>

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    <TD width="1%" style="border-left: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
                    <TD valign="top" style="border-top: 1px solid #000000"><DIV style="margin-left:0px; text-indent:-0px">Common Shares, no<BR>
par value
</DIV></TD>
    <TD style="border-right: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD nowrap align="right" valign="top" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD align="right" valign="top" style="border-top: 1px solid #000000">1,200,000</TD>
    <TD nowrap valign="top" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-right: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>

<TD align="center" valign="top" style="border-top: 1px solid #000000">$88.23
</TD>
    <TD style="border-right: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>

<TD align="center" valign="top" style="border-top: 1px solid #000000">$105,876,000.00
</TD>
    <TD style="border-right: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>

<TD align="center" valign="top" style="border-top: 1px solid #000000">$12,461.61</TD>
    <TD width="1%" style="border-right: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
</TR>
<TR style="font-size: 1px" valign="bottom">
    <TD nowrap align="left" colspan="17" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>

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</DIV>



<P>
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<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top">
    <TD width="1%" nowrap align="left">(1)</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="96%">Consists of Common Shares of Potash Corporation of Saskatchewan Inc. (the &#147;Registrant&#148;) to be
issued pursuant to the Potash Corporation of Saskatchewan Inc. 2005 Performance Option Plan
(the &#147;Plan&#148;).</TD>
</TR>

<TR><TD>&nbsp;</TD></TR>

<TR valign="top">
    <TD width="1%" nowrap align="left">(2)</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="96%">Estimated solely for purposes of calculation of
the registration fee, based upon the exercise price of options
denominated in U.S.&nbsp;dollars pursuant to Rule 457(h) under the Securities Act of 1933, as
amended (the &#147;Securities&nbsp;Act&#148;).</TD>
</TR>

</TABLE>



<P>
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<P align="center" style="font-size: 10pt">&nbsp;
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<A name="toc"><DIV align="CENTER" style="page-break-before:always"><U><B>TABLE OF CONTENTS</B></U></DIV></A>

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<TR><TD colspan="9"><A HREF="#000">PART II</A></TD></TR>
<TR><TD colspan="9"><A HREF="#001">SIGNATURES</A></TD></TR>
<TR><TD colspan="9"><A HREF="#002">EXHIBIT INDEX</A></TD></TR>
<TR><TD colspan="9"><A HREF="o16643exv4w1.htm">2005 Performance Option Plan and Form of Grant Certificate</A></TD></TR>
<TR><TD colspan="9"><A HREF="o16643exv5w1.htm">Opinion of Stikeman Elliott LLP</A></TD></TR>
<TR><TD colspan="9"><A HREF="o16643exv23w1.htm">Consent of Deloitte & Touche LLP</A></TD></TR>
</TABLE>
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<P align="center" style="font-size: 10pt"><B>PART II</B>



<P align="center" style="font-size: 10pt"><B>INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</B>



<P align="left" style="font-size: 10pt"><B>Item&nbsp;3. Incorporation of Documents by Reference</B>



<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following documents previously filed by the Registrant with the Securities and Exchange
Commission (the &#147;Commission&#148;), are incorporated by reference in this Registration Statement:


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;The Registrant&#146;s Annual Report on Form 10-K for the year ended December&nbsp;31, 2004, filed
with the Commission on March&nbsp;11, 2005, as amended on Form 10-K/A, filed on April&nbsp;22, 2005.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;The Registrant&#146;s Quarterly Reports on Form 10-Q for the calendar quarter ended March&nbsp;31,
2004, filed with the Commission on May&nbsp;7, 2004, for the calendar quarter ended June&nbsp;30, 2004, filed
with the Commission on August&nbsp;6, 2004, and for the calendar quarter ended September&nbsp;30, 2004, filed
with the Commission on November&nbsp;5, 2004.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)&nbsp;The description of the Registrant&#146;s Common Shares contained in the Registrant&#146;s Current
Report on Form 8-K filed with the Commission on December&nbsp;21, 2001.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In addition, all of the Registrant&#146;s reports filed with the Commission pursuant to Sections
13(a), 13(c), 14 and 15(d) of the Securities Exchange Act of 1934, as amended (the &#147;Exchange Act&#148;),
after the date of this Registration Statement and prior to filing a post-effective amendment which
indicates that all securities offered hereby have been sold or which deregisters all securities
then remaining unsold shall be deemed to be incorporated by reference in this Registration
Statement and to be a part hereof from the date of filing of such reports.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Any statement contained herein or in a 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 contained in any 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, except as so modified or superseded,
to constitute a part of this Registration Statement.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Item&nbsp;4. Description of Securities</B>


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Item&nbsp;5. Interests of Named Experts and Counsel</B>


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Item&nbsp;6. Indemnification of Directors and Officers</B>


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;124 of The Canada Business Corporations Act authorizes corporations to indemnify past
and present directors, officers and certain other individuals for liabilities incurred in
connection with their services as such (including costs, expenses and settlement payments) if such
individual acted honestly and in good faith with a view to the best interests of the corporation
and, in the case of a criminal or administrative proceeding, if such individual had reasonable
grounds for believing his or her conduct was lawful. In the case of a suit by or on behalf of the
corporation, a court must approve the indemnification.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;11(4) of the Registrant&#146;s Bylaws provides that the Registrant shall indemnify
directors and officers to the extent required or permitted by law.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Registrant has entered into agreements with its directors and officers (each an
&#147;Indemnitee&#148;) to indemnify the Indemnitee, to the extent permitted by law and subject to certain
limitations, against all costs reasonably incurred by an Indemnitee in an action or proceeding to
which the Indemnitee was made a party by reason of the Indemnitee being


<P align="center" style="font-size: 10pt">2
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">


<P align="left" style="font-size: 10pt">an officer and/or director of (i)&nbsp;the Registrant or (ii)&nbsp;if at the request of the Registrant,
of an organization of which the Registrant is a shareholder or creditor.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Registrant maintains insurance policies relating to certain liabilities that its directors
and officers may incur in such capacity.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Item&nbsp;7. Exemption from Registration Claimed</B>


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Item&nbsp;8. Exhibits</B>


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;See Exhibit&nbsp;Index.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Item&nbsp;9. Undertakings</B>


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;The undersigned Registrant hereby undertakes:





<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1)&nbsp;To file, during any period in which offers or sales are being made, a post-effective
amendment to this Registration Statement:


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i)&nbsp;To include any prospectus required by Section&nbsp;10(a)(3) of the Securities Act;


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii)&nbsp;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 amount of securities offered would not exceed that which was registered) and
any deviation from the low or high end of the estimated offering range may be reflected in the form
of prospectus filed with the Commission pursuant to Rule 424(b) if, in the aggregate, the change in
volume and price represent no more than a 20&nbsp;percent change in the maximum aggregate offering price
set forth in the &#147;Calculation of Registration Fee&#148; table in the effective Registration Statement;


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii)&nbsp;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.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;provided, however, that paragraphs (a)(1)(i) and (a)(1)(ii) do not apply if the information
required to be included in a post-effective amendment by those paragraphs is contained in periodic
reports filed with or furnished to the Commission by the Registrant pursuant to Section&nbsp;13 or 15(d)
of the Exchange Act of 1934 that are incorporated by reference in the Registration Statement.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2)&nbsp;That, for the purpose of determining any liability under the Securities Act, 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 <I>bona fide </I>offering thereof.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3)&nbsp;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.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;The undersigned Registrant hereby undertakes that, for purposes of determining any
liability under the Securities Act, each filing of the Registrant&#146;s annual report pursuant to
Section 13(a) or 15(d) of the Exchange Act that is incorporated by reference in the Registration
Statement 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 <I>bona
fide </I>offering thereof.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(h)&nbsp;Insofar as indemnification for liabilities arising under the Securities Act 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


<P align="center" style="font-size: 10pt">3
</DIV>

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<P align="left" style="font-size: 10pt">expressed in the Securities Act 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 and will be governed by the final adjudication of such issue.



<P align="center" style="font-size: 10pt">4
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<P align="center" style="font-size: 10pt"><B>SIGNATURES</B>



<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Act of 1933, as amended, 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 Saskatoon, Province of Saskatchewan,
Canada, on the 5<SUP style="font-size: 85%; vertical-align: text-top">th</SUP> day of May, 2005.


<TABLE width="100%" border="0" cellspacing="0" cellpadding="0" style="font-size: 10pt">
<TR>
    <TD width="48%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>
<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="4" align="left">POTASH CORPORATION OF SASKATCHEWAN INC.<BR>
&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD valign="top">By:&nbsp;&nbsp;</TD>
    <TD colspan="2" style="border-bottom: 1px solid #000000" align="left">/s/ William J. Doyle
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="left">William J. Doyle&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="left">President and Chief Executive Officer&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
</TABLE>

<P align="center" style="font-size: 10pt">POWER OF ATTORNEY



<P align="center" style="font-size: 10pt"><HR size="1" noshade width="26%" align="center" color="#000000">




<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Each person whose signature appears below constitutes and appoints William J. Doyle, Wayne R.
Brownlee and Joseph Podwika, his or her true and lawful attorney-in-fact and agent, each acting
alone, with full power of substitution and resubstitution, for him or her and in his or her name,
place and stead, in any and all capacities, to sign any or all amendments (including post-effective
amendments) to this Registration Statement, and to file 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, each acting alone, full power and authority to do and perform
each and every act and thing appropriate or necessary to be done in connection therewith, as fully
to all intents and purposes as he or she might or could do in person, hereby ratifying and
confirming all that said attorney-in-fact and agent, acting alone, or his or her substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration
Statement has been signed by the following persons in the capacities indicated, on the dates
indicated below.

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    <TD width="18%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Name</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>Title</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>Date</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->

<TR>
    <TD>&nbsp;</TD>
</TR>

<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Dallas J. Howe<HR size="1" noshade color="#000000">Dallas J. Howe</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Chairman of the Board</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">May&nbsp;5, 2005</TD>
</TR>

<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Wayne R. Brownlee
<HR size="1" noshade color="#000000">Wayne R. Brownlee
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Senior Vice President,
Treasurer and Chief Financial
Officer (Principal financial
and accounting officer)
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">May&nbsp;5, 2005</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ William J. Doyle
<HR size="1" noshade color="#000000">
William J. Doyle
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">President and Chief Executive
Officer
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">May&nbsp;5, 2005</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Frederick J. Blesi<HR size="1" noshade color="#000000">Frederick J. Blesi</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">May&nbsp;5, 2005</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ John W. Estey<HR size="1" noshade color="#000000">John W. Estey
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">May&nbsp;5, 2005</TD>
</TR>
<!-- End Table Body --></TABLE>
</DIV>


<P align="center" style="font-size: 10pt">5
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">
<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head --><TR valign="bottom">
    <TD width="40%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD>
    <TD width="38%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD>
    <TD width="18%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Name</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>Title</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>Date</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Wade Fetzer III<HR size="1" noshade color="#000000">Wade Fetzer III</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">May&nbsp;5, 2005</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Alice D. Laberge<HR size="1" noshade color="#000000">Alice D. Laberge</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">May&nbsp;5, 2005</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Jeffrey J. McCaig<HR size="1" noshade color="#000000">Jeffrey J. McCaig</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">May&nbsp;5, 2005</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Mary Mogford<HR size="1" noshade color="#000000">Mary Mogford</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">May&nbsp;5, 2005</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Paul J. Schoenhals<HR size="1" noshade color="#000000">Paul J. Schoenhals</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">May&nbsp;5, 2005</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ E. Robert Stromberg, Q.C.<HR size="1" noshade color="#000000">E. Robert Stromberg, Q.C.</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">May&nbsp;5, 2005</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Jack G.Vicq<HR size="1" noshade color="#000000">Jack G.Vicq</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">May&nbsp;5, 2005</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Elena Viyella de Paliza<HR size="1" noshade color="#000000">Elena Viyella de Paliza</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">May&nbsp;5, 2005</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">PCS Administration (USA), Inc.</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Barbara Jane Irwin
<HR size="1" noshade color="#000000">
Barbara Jane Irwin, Senior Vice
President, Administration
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Authorized Representative in the United States</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">May&nbsp;5, 2005</TD>
</TR>
<!-- End Table Body --></TABLE>
</DIV>


<P align="center" style="font-size: 10pt">6
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">
<!-- link1 "EXHIBIT INDEX" -->
<DIV align="left"><A NAME="002"></A></DIV>

<P align="center" style="font-size: 10pt"><B>EXHIBIT INDEX</B>


<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head --><TR valign="bottom">
    <TD width="2%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="77%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="12%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #000000"><B>Exhibit No.</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Description</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>Method of Filing</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">4.1</TD>
    <TD nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Potash Corporation of Saskatchewan Inc.
2005 Performance Option Plan and Form of
Grant Certificate
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="right" valign="bottom">Filed herewith</TD>
</TR>
<TR valign="bottom">
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">&nbsp;</TD>
    <TD nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="right" valign="bottom">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">5.1</TD>
    <TD nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Opinion of Stikeman Elliott LLP,
Canadian counsel to the Registrant, as
to the legality of the shares being
registered
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="right" valign="bottom">Filed herewith</TD>
</TR>
<TR valign="bottom">
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">&nbsp;</TD>
    <TD nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="right" valign="bottom">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">23.1</TD>
    <TD nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Consent of
Deloitte &#038; Touche LLP
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="right" valign="bottom">Filed herewith</TD>
</TR>
<TR valign="bottom">
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">&nbsp;</TD>
    <TD nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="right" valign="bottom">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">23.2</TD>
    <TD nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Consent of Stikeman Elliott LLP
(included in Exhibit&nbsp;5.1)
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="right" valign="bottom">Filed herewith</TD>
</TR>
<TR valign="bottom">
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">&nbsp;</TD>
    <TD nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="right" valign="bottom">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD nowrap align="right" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">24.1</TD>
    <TD nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Power of Attorney, included on signature
page
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="right" valign="bottom">Filed herewith</TD>
</TR>
<!-- End Table Body --></TABLE>
</DIV>


<P align="center" style="font-size: 10pt">7
</DIV>

</BODY>
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sv8
Table of Contents
As filed with the
Securities and Exchange Commission on May 6, 2005
Registration No. 333-
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM S-8
REGISTRATION STATEMENT
UNDER
THE SECURITIES ACT OF 1933
POTASH CORPORATION OF SASKATCHEWAN INC.
(Exact name of registrant as specified in its charter
)
Canada
(State or other jurisdiction of incorporation or organization)
N/A
(I.R.S. Employer Identification No.)
122 – 1
st
Avenue South
Saskatoon, Saskatchewan, Canada S7K 7G3
306-933-8500
(
Address, including zip code, and telephone number of registrant's principal executive offices)
POTASH CORPORATION OF SASKATCHEWAN INC.
2005 PERFORMANCE OPTION PLAN
(Full Titles of the Plans)
William J. Doyle
Potash Corporation of Saskatchewan Inc.
122 – 1
st
Avenue South
Saskatoon, Saskatchewan, Canada S7K 7G3
306-933-8500
(Name, Address, and Telephone Number, Including Area Code, of Agent for Service)
with copies to:
Craig Brod, Esq.
Cleary, Gottlieb, Steen & Hamilton
One Liberty Plaza
New York, NY 10006
(212) 225-2000
CALCULATION OF REGISTRATION FEE
Title of Securities
Amount
Proposed Maximum
Proposed Maximum
Amount of
to be
to be
Offering Price Per
Aggregate Offering
Registration
Registered (2)
Registered (1)
Share (2)
Price
Fee (2)
Common Shares, no
par value
1,200,000
$88.23
$105,876,000.00
$12,461.61
(1)
Consists of Common Shares of Potash Corporation of Saskatchewan Inc. (the "Registrant") to be
issued pursuant to the Potash Corporation of Saskatchewan Inc. 2005 Performance Option Plan
(the "Plan").
(2)
Estimated solely for purposes of calculation of
the registration fee, based upon the exercise price of options
denominated in U.S. dollars pursuant to Rule 457(h) under the Securities Act of 1933, as
amended (the "Securities Act").
TABLE OF CONTENTS
PART II
SIGNATURES
EXHIBIT INDEX
2005 Performance Option Plan and Form of Grant Certificate
Opinion of Stikeman Elliott LLP
Consent of Deloitte & Touche LLP
Table of Contents
PART II
INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
Item 3. Incorporation of Documents by Reference
The following documents previously filed by the Registrant with the Securities and Exchange
Commission (the "Commission"), are incorporated by reference in this Registration Statement:
(a) The Registrant's Annual Report on Form 10-K for the year ended December 31, 2004, filed
with the Commission on March 11, 2005, as amended on Form 10-K/A, filed on April 22, 2005.
(b) The Registrant's Quarterly Reports on Form 10-Q for the calendar quarter ended March 31,
2004, filed with the Commission on May 7, 2004, for the calendar quarter ended June 30, 2004, filed
with the Commission on August 6, 2004, and for the calendar quarter ended September 30, 2004, filed
with the Commission on November 5, 2004.
(c) The description of the Registrant's Common Shares contained in the Registrant's Current
Report on Form 8-K filed with the Commission on December 21, 2001.
In addition, all of the Registrant's reports filed with the Commission pursuant to Sections
13(a), 13(c), 14 and 15(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"),
after the date of this Registration Statement and prior to filing a post-effective amendment which
indicates that all securities offered hereby have been sold or which deregisters all securities
then remaining unsold shall be deemed to be incorporated by reference in this Registration
Statement and to be a part hereof from the date of filing of such reports.
Any statement contained herein or in a 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 contained in any 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, except as so modified or superseded,
to constitute a part of this Registration Statement.
Item 4. Description of Securities
Not applicable.
Item 5. Interests of Named Experts and Counsel
Not applicable.
Item 6. Indemnification of Directors and Officers
Section 124 of The Canada Business Corporations Act authorizes corporations to indemnify past
and present directors, officers and certain other individuals for liabilities incurred in
connection with their services as such (including costs, expenses and settlement payments) if such
individual acted honestly and in good faith with a view to the best interests of the corporation
and, in the case of a criminal or administrative proceeding, if such individual had reasonable
grounds for believing his or her conduct was lawful. In the case of a suit by or on behalf of the
corporation, a court must approve the indemnification.
Section 11(4) of the Registrant's Bylaws provides that the Registrant shall indemnify
directors and officers to the extent required or permitted by law.
The Registrant has entered into agreements with its directors and officers (each an
"Indemnitee") to indemnify the Indemnitee, to the extent permitted by law and subject to certain
limitations, against all costs reasonably incurred by an Indemnitee in an action or proceeding to
which the Indemnitee was made a party by reason of the Indemnitee being
2
Table of Contents
an officer and/or director of (i) the Registrant or (ii) if at the request of the Registrant,
of an organization of which the Registrant is a shareholder or creditor.
The Registrant maintains insurance policies relating to certain liabilities that its directors
and officers may incur in such capacity.
Item 7. Exemption from Registration Claimed
Not applicable.
Item 8. Exhibits
See Exhibit Index.
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;
(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 amount of securities offered would not exceed that which was registered) and
any deviation from the low or high end of the estimated offering range may be reflected in the form
of prospectus filed with the Commission pursuant to Rule 424(b) if, in the aggregate, the change 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 information
required to be included in a post-effective amendment by those paragraphs is contained in periodic
reports filed with or furnished to the Commission by the Registrant pursuant to Section 13 or 15(d)
of the 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, 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, each filing of the Registrant's annual report pursuant to
Section 13(a) or 15(d) of the Exchange Act that is incorporated by reference in the Registration
Statement 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.
(h) Insofar as indemnification for liabilities arising under the Securities Act 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
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expressed in the Securities Act 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 and will be governed by the final adjudication of such issue.
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SIGNATURES
Pursuant to the requirements of the Securities Act of 1933, as amended, 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 Saskatoon, Province of Saskatchewan,
Canada, on the 5
th
day of May, 2005.
POTASH CORPORATION OF SASKATCHEWAN INC.
By:
/s/ William J. Doyle
William J. Doyle
President and Chief Executive Officer
POWER OF ATTORNEY
Each person whose signature appears below constitutes and appoints William J. Doyle, Wayne R.
Brownlee and Joseph Podwika, his or her true and lawful attorney-in-fact and agent, each acting
alone, with full power of substitution and resubstitution, for him or her and in his or her name,
place and stead, in any and all capacities, to sign any or all amendments (including post-effective
amendments) to this Registration Statement, and to file 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, each acting alone, full power and authority to do and perform
each and every act and thing appropriate or necessary to be done in connection therewith, as fully
to all intents and purposes as he or she might or could do in person, hereby ratifying and
confirming all that said attorney-in-fact and agent, acting alone, or his or her substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.
Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration
Statement has been signed by the following persons in the capacities indicated, on the dates
indicated below.
Name
Title
Date
/s/ Dallas J. Howe
Dallas J. Howe
Chairman of the Board
May 5, 2005
/s/ Wayne R. Brownlee
Wayne R. Brownlee
Senior Vice President,
Treasurer and Chief Financial
Officer (Principal financial
and accounting officer)
May 5, 2005
/s/ William J. Doyle
William J. Doyle
President and Chief Executive
Officer
May 5, 2005
/s/ Frederick J. Blesi
Frederick J. Blesi
Director
May 5, 2005
/s/ John W. Estey
John W. Estey
Director
May 5, 2005
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Name
Title
Date
/s/ Wade Fetzer III
Wade Fetzer III
Director
May 5, 2005
/s/ Alice D. Laberge
Alice D. Laberge
Director
May 5, 2005
/s/ Jeffrey J. McCaig
Jeffrey J. McCaig
Director
May 5, 2005
/s/ Mary Mogford
Mary Mogford
Director
May 5, 2005
/s/ Paul J. Schoenhals
Paul J. Schoenhals
Director
May 5, 2005
/s/ E. Robert Stromberg, Q.C.
E. Robert Stromberg, Q.C.
Director
May 5, 2005
/s/ Jack G.Vicq
Jack G.Vicq
Director
May 5, 2005
/s/ Elena Viyella de Paliza
Elena Viyella de Paliza
Director
May 5, 2005
PCS Administration (USA), Inc.
/s/ Barbara Jane Irwin
Barbara Jane Irwin, Senior Vice
President, Administration
Authorized Representative in the United States
May 5, 2005
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EXHIBIT INDEX
Exhibit No.
Description
Method of Filing
4.1
Potash Corporation of Saskatchewan Inc.
2005 Performance Option Plan and Form of
Grant Certificate
Filed herewith
5.1
Opinion of Stikeman Elliott LLP,
Canadian counsel to the Registrant, as
to the legality of the shares being
registered
Filed herewith
23.1
Consent of
Deloitte & Touche LLP
Filed herewith
23.2
Consent of Stikeman Elliott LLP
(included in Exhibit 5.1)
Filed herewith
24.1
Power of Attorney, included on signature
page
Filed herewith
7