Rinker Materials is one of the leading manufacturers of concrete building materials in the United States. It provides ready-mixed concrete, crushed stone, concrete blocks and pipes, quarry products, asphalt, limestone, granite, sand and cement. The company also supplies drywall, hardeners, adhesives, reinforcing steel, connectors, epoxies, acoustical products and a range of tools and equipment. Rinker Materials offers engineering field analysis, thermal desorption, waste transport, project estimation and design, laboratory testing, and transport and export services. The company operates in nearly 30 U.S. states and employs over 10,000 people. Rinker Materials is a part of Rinker Group, which maintains presence in more than 50 countries throughout Americas, Europe, Asia, Africa, Australia and the Middle East. Headquartered in West Palm Beach, Fla., Rinker Materials maintains a location in Tampa, Fla.