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Martin Marietta Materials, Inc. Declares Regular Cash Dividend

  Martin Marietta Materials, Inc. Declares Regular Cash Dividend

Business Wire

RALEIGH, N.C. -- January 25, 2013

Anne H. Lloyd, Executive Vice President, ChiefFinancial Officer and Treasurer
of Martin Marietta Materials, Inc. (NYSE:MLM), today announced that the Board
of Directors has declared a regular quarterly cash dividend of $0.40 (forty
cents) per share on the Corporation’s common stock. This dividend, which
represents a cash dividend of $1.60 per share on an annualized basis, is
payable March29,2013, to shareholders of record at the close of business on
March 1, 2013.

Martin Marietta Materials, Inc. is the nation’s second largest producer of
construction aggregates and a producer of magnesia-based chemicals and
dolomitic lime. For more information about Martin Marietta Materials, Inc.,
refer to the Corporation’s website at



Martin Marietta Materials, Inc.
Anne Lloyd, 919-783-4660
Executive Vice President, Chief Financial Officer and Treasurer
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