Vulcan Materials Co. produces and distributes construction aggregates including crushed stone, sand and gravel for construction. It also produces asphalt mix and ready-mixed concrete as well as cement in Florida. The company operates through four business segments: Aggregates, Concrete, Asphalt Mix and Calcium. The Aggregates segment produces and sells aggregates, primarily crushed stone, sand and gravel. Aggregates are used in virtually all types of construction projects including highways, water and sewer systems, industrial manufacturing facilities and other non-residential buildings, railroad ballast as well as non-construction industrial and agricultural applications. The Concrete segment produces and sells ready-mixed concrete in California, Florida, Georgia, Maryland, Texas, Virginia and the District of Columbia. This segment also produces and sells other concrete products such as block and pre-cast beams in a limited number of markets. The Asphalt Mix segment produces and sells asphalt in Arizona, California, New Mexico and Texas. The Calcium segment produces calcium products for the animal feed, paint, plastics, water treatment and joint compound industries with calcium carbonate material mined at the Brooksville quarry. Vulcan Materials was founded in 1909 and is headquartered in Birmingham, AL.