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 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman" ALIGN="center"><B>UNITED STATES </B></P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman" ALIGN="center"><B>SECURITIES AND EXCHANGE COMMISSION </B></P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman" ALIGN="center"><B>WASHINGTON, DC 20549 </B></P>
<P STYLE="margin-top:24pt; margin-bottom:0pt; font-size:16pt; font-family:Times New Roman" ALIGN="center"><B>FORM <FONT STYLE="white-space:nowrap">8-K</FONT> </B></P>
<P STYLE="margin-top:24pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman" ALIGN="center"><B>CURRENT REPORT PURSUANT </B></P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman" ALIGN="center"><B>TO SECTION&nbsp;13 OR 15(D) OF THE </B></P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman" ALIGN="center"><B>SECURITIES EXCHANGE ACT OF 1934 </B></P> <P STYLE="font-size:24pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TD VALIGN="top" NOWRAP> <P STYLE="text-indent:2.00em; font-size:12pt; font-family:Times New Roman" ALIGN="justify">Date&nbsp;of&nbsp;report&nbsp;(Date&nbsp;of&nbsp;earliest&nbsp;event&nbsp;reported)</P></TD>
<TD VALIGN="bottom" STYLE="BORDER-BOTTOM:1px solid #000000"><FONT STYLE="font-size:8pt">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top" STYLE="BORDER-BOTTOM:1px solid #000000"> <P ALIGN="justify" STYLE="font-family:Times New Roman; font-size:12pt">October&nbsp;8, 2013</P></TD></TR>
</TABLE> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman" ALIGN="center"><B>Martin Marietta Materials, Inc. </B></P>
<P STYLE="line-height:1.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1px solid #000000">&nbsp;</P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:11pt; font-family:Times New Roman" ALIGN="center">(Exact Name of Registrant as Specified
in Its Charter) </P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman" ALIGN="center"><B>North Carolina </B></P>
<P STYLE="line-height:1.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1px solid #000000">&nbsp;</P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:11pt; font-family:Times New Roman" ALIGN="center">(State or Other Jurisdiction of
Incorporation) </P> <P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000"><B>1-12744</B></TD>
<TD VALIGN="bottom" STYLE="BORDER-BOTTOM:1px solid #000000"><FONT STYLE="font-size:8pt">&nbsp;</FONT></TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000"><B>56-1848578</B></TD></TR>
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<TD VALIGN="top" ALIGN="center">(Commission File Number)</TD>
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<TD VALIGN="top" ALIGN="center">(IRS Employer Identification No.)</TD></TR>
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<TD VALIGN="top" STYLE="BORDER-BOTTOM:1px solid #000000"><B>&nbsp;&nbsp;&nbsp;&nbsp;2710 Wycliff Road, Raleigh, North Carolina</B></TD>
<TD VALIGN="bottom" STYLE="BORDER-BOTTOM:1px solid #000000"><FONT STYLE="font-size:8pt">&nbsp;</FONT></TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000"><B>27607</B></TD></TR>
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<TD VALIGN="top" ALIGN="center">(Address of Principal Executive Offices)</TD>
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<TD VALIGN="top" ALIGN="center">(Zip Code)</TD></TR>
</TABLE> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman" ALIGN="center"><B>(919) 781-4550 </B></P>
<P STYLE="line-height:1.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1px solid #000000">&nbsp;</P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:11pt; font-family:Times New Roman" ALIGN="center">(Registrant&#146;s Telephone Number,
Including Area Code) </P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman" ALIGN="center"><B>Not Applicable </B></P>
<P STYLE="line-height:1.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1px solid #000000">&nbsp;</P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:11pt; font-family:Times New Roman" ALIGN="center">(Former Name or Former Address, if
Changed Since Last Report) </P> <P STYLE="margin-top:12pt; margin-bottom:0pt; text-indent:5%; font-size:12pt; font-family:Times New Roman" ALIGN="justify">Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy
the filing obligation of the registrant under any of the following provisions: </P> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TD WIDTH="5%" VALIGN="top" ALIGN="left"><FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT></TD>
<TD ALIGN="left" VALIGN="top"> <P ALIGN="justify" STYLE="font-family:Times New Roman; font-size:12pt">Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) </P></TD></TR></TABLE>
<P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TD ALIGN="left" VALIGN="top"> <P ALIGN="justify" STYLE="font-family:Times New Roman; font-size:12pt">Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) </P></TD></TR></TABLE>
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<TD WIDTH="5%">&nbsp;</TD>
<TD WIDTH="5%" VALIGN="top" ALIGN="left"><FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT></TD>
<TD ALIGN="left" VALIGN="top"> <P ALIGN="justify" STYLE="font-family:Times New Roman; font-size:12pt">Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) </P></TD></TR></TABLE>
<P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TR>
<TD WIDTH="5%">&nbsp;</TD>
<TD WIDTH="5%" VALIGN="top" ALIGN="left"><FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT></TD>
<TD ALIGN="left" VALIGN="top"> <P ALIGN="justify" STYLE="font-family:Times New Roman; font-size:12pt">Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) </P></TD></TR></TABLE>

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 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman"><B>Item&nbsp;1.04&nbsp;&nbsp;&nbsp;&nbsp;Mine Safety &#151; Reporting of Shutdowns and Patterns of Violations.
</B></P> <P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman" ALIGN="justify">On October&nbsp;8, 2013, the Corporation received an&nbsp;order issued by the Mine Safety and Health Administration (&#147;MSHA&#148;)
under section 107(a) of the Federal Mine Safety and Health Act of 1977 at its Rock Hill Quarry in Rock Hill, South Carolina. The order stated that a front-end loader was removing shot for production from a bench in the pit. Large boulders were
observed halfway up the face over the area the loader was preparing to remove rock material from and were supported only by material immediately below them. The order stated that material being loaded created a hazard of large boulders falling that
could strike or fall on the loader and potentially injure the equipment operator. No one was injured in the cited incident. The Corporation took corrective action and the order was terminated. </P>

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 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman"><B>SIGNATURES </B></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; text-indent:5%; font-size:12pt; font-family:Times New Roman" ALIGN="justify">Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed
on its behalf by the undersigned hereunto duly authorized. </P> <P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TD VALIGN="top" COLSPAN="3"> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman" ALIGN="justify"><U>MARTIN MARIETTA MATERIALS, INC.</U></P>
<P STYLE="margin-top:0pt; margin-bottom:1pt; font-size:12pt; font-family:Times New Roman" ALIGN="center">(Registrant)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
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<TD VALIGN="top"> <P ALIGN="justify" STYLE="font-family:Times New Roman; font-size:12pt">Date: October&nbsp;15, 2013</P></TD>
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<TD VALIGN="top"> <P ALIGN="justify" STYLE="font-family:Times New Roman; font-size:12pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;By:</P></TD>
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<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">/s/ Anne H. Lloyd</TD></TR>
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<TD VALIGN="top" ALIGN="center">&nbsp;&nbsp;&nbsp;&nbsp;Anne H. Lloyd</TD></TR>
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<TD VALIGN="top" COLSPAN="3"> <P ALIGN="justify" STYLE="font-family:Times New Roman; font-size:12pt">Executive&nbsp;Vice&nbsp;President&nbsp;and&nbsp;Chief&nbsp;Financial&nbsp;Officer</P></TD></TR>
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</BODY></HTML>
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FORM 8-K
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 20549
FORM
8-K
CURRENT REPORT PURSUANT
TO SECTION 13 OR 15(D) OF THE
SECURITIES EXCHANGE ACT OF 1934
Date of report (Date of earliest event reported)
October 8, 2013
Martin Marietta Materials, Inc.
(Exact Name of Registrant as Specified
in Its Charter)
North Carolina
(State or Other Jurisdiction of
Incorporation)
1-12744
56-1848578
(Commission File Number)
(IRS Employer Identification No.)
2710 Wycliff Road, Raleigh, North Carolina
27607
(Address of Principal Executive Offices)
(Zip Code)
(919) 781-4550
(Registrant's Telephone Number,
Including Area Code)
Not Applicable
(Former Name or Former Address, if
Changed Since Last Report)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy
the filing obligation of the registrant under any of the following provisions:
¨
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
¨
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
¨
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
¨
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Item 1.04    Mine Safety — Reporting of Shutdowns and Patterns of Violations.
On October 8, 2013, the Corporation received an order issued by the Mine Safety and Health Administration ("MSHA")
under section 107(a) of the Federal Mine Safety and Health Act of 1977 at its Rock Hill Quarry in Rock Hill, South Carolina. The order stated that a front-end loader was removing shot for production from a bench in the pit. Large boulders were
observed halfway up the face over the area the loader was preparing to remove rock material from and were supported only by material immediately below them. The order stated that material being loaded created a hazard of large boulders falling that
could strike or fall on the loader and potentially injure the equipment operator. No one was injured in the cited incident. The Corporation took corrective action and the order was terminated.
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed
on its behalf by the undersigned hereunto duly authorized.
MARTIN MARIETTA MATERIALS, INC.
(Registrant)
Date: October 15, 2013
By:
/s/ Anne H. Lloyd
Anne H. Lloyd
Executive Vice President and Chief Financial Officer