Giant Resource Recovery Inc

Giant Cement Holding, a subsidiary of Spain's Cementos Portland Valderrivas, produces portland and masonry cement and related aggregates. The company operates limestone quarries and portland and masonry cement-manufacturing facilities through its Giant Cement, Keystone Cement and CDN-USA subsidiaries. Through subsidiaries Giant Resource Recovery, Omni, M&M Chemical, as well as Keystone Cement, Giant Cement processes aluminum cans and other waste into fuel for use in the production of cement and aggregates. Giant Cement Holding's operations stretch from Georgia to Maine. Headquartered in Summerville, S.C., Giant Cement Holdings employs nearly 800 people at its corporate location.

Holcim is one of the world s leading suppliers of cement; aggregates, including gravel and sand; concrete; and construction-related services. From its origins in Switzerland, the group has grown into a worldwide organization with market presence in more than 70 countries on all continents. The group employs approximately 57,000 people. In the United States, Holcim distributes more than 16.7 million tonnes of cement and related materials each year by ship. The company s corporate structure in the United States is divided in 13 different marketing regions in three geographical divisions that serve customers in more than 30 states. The company employs more than 2,300 people. A Holcim facility is located in Holly Hill, S.C.

Founded in 1939, Martin Marietta Materials Inc. is the one of the largest producers of construction aggregates in the United States. Based in Cross, S.C., it supplies crushed stone, sand and gravel materials to build the roads, sidewalks and foundations. The firm has more than 285 quarries and distribution facilities in 28 states, including the Bahamas and Nova Scotia. Martin Marietta Materials Inc. provides an array of products, such as asphalt, concrete, magnesia chemicals and lime, flue gas desulphurization, composite materials and surplus equipment.