Martin Marietta Materials, Inc. Confirms Fatality

The management of Martin Marietta Materials, Inc. (NYSE:MLM) today issued the following statement: It is with great sadness that we confirm the death of our employee at our Weeping Water mine in Nebraska. The details surrounding this incident are under investigation. Our thoughts and prayers are with the family and fellow employees who have been affected by this tragic event.

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 www.martinmarietta.com.

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