Vulcan Materials Company is one of the largest producers of construction aggregates primarily crushed stone, sand and gravel in the United States. Based in Warrenton, Va., the company produces asphalt mix and concrete. Its materials have applications in building roads, tunnels, bridges and airports, as well as in building churches, shopping centers and factories. Vulcan Materials Company provides infrastructure material required by the American economy. In addition, the company offers aggregates for use in residential, commercial and industrial building construction.