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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
916076	Martin Marietta Materials Inc	MLM	Mining & Quarrying Of Nonmetallic Minerals (No Fuels) (1400)	561848578

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1252464	H Edward Mcdermott	591 Redwood Highway , Suite 3215 Mill Valley CA 94941		No	No	Yes	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2010-11-30	0	$0.00	0	No	4	P	Indirect	See Footnotes

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	P	Indirect	See Footnotes

Footnotes

On November 30, 2010, Edward H. McDermott ("EHM") purchased one-third of the outstanding shares of SPO Advisory Corp. ("SPO Corp.") previously owned by William J. Patterson. William J. Patterson passed away on September 24, 2010. Following the transaction which caused this filing, 5,194,435 shares of the issuer's common stock are owned directly by SPO Partners II, L.P. ("SPO Partners"), and may be deemed to be indirectly beneficially owned by (i) SPO Advisory Partners, L.P. ("SPO Advisory"), the sole general partner of SPO Partners, (ii) SPO Corp., the sole general partner of SPO Advisory, and (iii) John H. Scully ("JHS"), William E. Oberndorf ("WEO") and EHM, the three controlling persons of SPO Corp.
Additionally, following the transaction causing this filing, 186,800 shares of the issuer's common stock are owned directly by San Francisco Partners, L.P. ("SF Partners"), and may be deemed to be indirectly beneficially owned by (i) SF Advisory Partners, L.P. ("SF Advisory"), the sole general partner of SF Partners, (ii) SPO Corp., the sole general partner of SF Advisory, and (iii) JHS, WEO and EHM, the three controlling persons of SPO Corp.
Additionally, following the transaction causing this filing, EHM beneficially owns 100 shares of the issuer's common stock held in the EHM individual retirement account, which is self-directed.