Vulcan Materials Co. engages in the production of construction aggregates. The company is headquartered in Birmingham, Alabama and currently employs 10,382 full-time employees. Its segments include Aggregates, Asphalt, Concrete, and Calcium. Aggregates segment produces and sells aggregates, such as crushed stone, sand and gravel, sand, and other aggregates and related products and services. Asphalt segment produces and sells asphalt mix in Alabama, Arizona, California, New Mexico, Tennessee and Texas and provides asphalt construction paving services in Alabama, Tennessee and Texas. Concrete segment produces and sells ready-mixed concrete in California, Maryland, Oklahoma, Texas, Virginia. Calcium segment is composed of a single calcium operation in Brooksville, Florida. This facility produces calcium products for the animal feed, plastics and water treatment industries with calcium carbonate material mined at the Brooksville quarry. The company provides the basic materials for the infrastructure delivered by trucks, ships, barges, and trains.