Lattimore Materials Corp.

Aggregate Industries Acquires Lattimore Materials Corp.

Aggregate Industries Acquires a Texas-based Aggregate and Ready Mixed Concrete Producer

Rockville, MD March 7, 2011 - Aggregate Industries US Inc., a wholly-owned subsidiary of Holcim Ltd, announced today that Lattimore Materials Corp. (LMC), a Texas-based aggregate and ready mixed concrete producer, has become a wholly-owned subsidiary of Aggregate Industries US Inc. Prior to this transaction, a minority interest in LMC was owned by a different subsidiary of Holcim Ltd.

"The acquisition of LMC will fit very well into the Aggregate Industries US operation," said Bernard Terver, Holcim Ltd United States Area Manager. "Until now, Aggregate Industries US did not have a presence in Texas. The acquisition of LMC firmly establishes Aggregate Industries US operations in this important area of the United States and allows Aggregate Industries US to fully leverage the very strong positions and reputation of LMC."

Pat Ward, Senior Vice President, Western Region for Aggregate Industries US will oversee the organization's operations.

Lattimore Materials Corp. operates seven aggregate mines, twenty-six ready mix sites with thirty-five concrete plants, four rail terminals and a fleet of over 400 mixer and haul trucks.

Aggregate Industries US Inc. is a subsidiary of Holcim Ltd, supplying aggregate-based materials and contracting services. Aggregate Industries US has approximately 3,000 employees and operates in 16 states and 300 cities across the United States.

Holcim Ltd is one of the world's leading suppliers of cement and aggregate (crushed stone, sand and gravel) as well as further activities such as ready mixed concrete and asphalt including services. The Group holds majority and minority interests in around 70 countries on all continents.