Vulcan Materials Company is the nations largest producer of construction aggregate (crushed stone, sand and gravel), asphalt, ready mix concrete, railroad ballast, and agricultural limestone.
Started in 1956, Lafarge North America is one of the largest diversified suppliers of construction materials in the United States and Canada. Located at Birmingham, Ala., the firm produces and sells cement, ready-mixed concrete, aggregates, asphalt and paving and construction. It also offers precast solutions ideal for warehouses, manufacturing plants, schools, retail, office buildings,...