RALEIGH, N.C., May 23, 2007 (BUSINESS WIRE) -- Anne H. Lloyd, Senior Vice President, Chief Financial 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 $0.275 (twenty-seven and one-half cents) per share on the Corporation's common stock. This dividend, which represents a cash dividend of $1.10 per share on an annualized basis, is payable June 29, 2007, to shareholders of record at the close of business on June 1, 2007.

Martin Marietta is the nation's second largest producer of construction aggregates, a leading producer of magnesia-based chemical products and dolomitic lime and also produces structural composites products.

SOURCE: Martin Marietta Materials, Inc.

Martin Marietta Materials, Inc.
Anne Lloyd, 919-783-4658
Senior Vice President,
Chief Financial Officer and Treasurer
www.martinmarietta.com

Copyright Business Wire 2007

News Provided by COMTEX