Keystone Cement Co

Buzzi Unicem USA was formed through the merger of RC Cement Company in January 2005. The merger comes as Italian cement-maker Buzzi Unicem S.p.A., parent company of RC Cement, acquired Germany's Dyckerhoff AG, which owns Lone Star Industries. Buzzi Unicem's other U.S. interest, Texas-based Alamo Cement Co., is not part of the merger. The international multi-regional heavy side group focused on cement, ready mix and aggregates. The new company's corporate headquarters will remain at RC's office in Bethlehem, Pa. Headquarters of the Midwest Division will remain at the Lone Star location in Indianapolis.

Heidelberg Materials, formerly known as Lehigh Hanson, is a leading supplier of cement, aggregates, ready mixed concrete, and asphalt with over 450 locations and approximately 9,000 employees in North America. Committed to sustainability, they aim to create industry-leading products and solutions to meet the construction needs of customers worldwide. With a history spanning over a century, Heidelberg Materials focuses on promoting transparency and improving the sustainable attributes of cement and concrete. Their dedication to digital innovation has transformed their business culture, ensuring they remain a trusted supplier for building materials in North America. Generated from the website

Lafarge North America is among the largest diversified construction materials companies and is a supplier of cement, aggregates and concrete and other materials for residential, commercial, institutional and public works construction in North America. The company is part of the Lafarge Group, a leader in building materials that is active in nearly 75 countries and employs more than 75,000 people. Lafarge and its subsidiaries are one of the largest suppliers of cement and leading ready-mixed concrete in North America. The company maintains more than 1,000 operations doing business throughout the United States and provinces in Canada. Its products are utilized in the construction of a variety of projects, such as roads, offices, factories, hospitals, department stores, sports stadiums, banks, museums, high-rise apartments, amusement parks, swimming pools and bridges. Lafarge North America maintains a location in Whitehall, Pa.