Martin Marietta Materials, Inc. Proposes Combination with Vulcan Materials Company in Stock-for-Stock Transaction

Martin Marietta Materials, Inc.

today announced that it has delivered a proposal to Vulcan Materials Company

and commenced an exchange offer to effect a business combination with Vulcan that would create a U.S.-based company that is the global leader in construction aggregates with a footprint reaching across North America. As of December 9, 2011, the combined market capitalization was $7.7 billion and the combined total enterprise value was $11.4 billion. The combined mineral reserves of the two companies would be 28 billion tons.