Vulcan Materials Company is the nation’s largest producer of construction aggregates, primarily crushed stone, sand and gravel, and a major producer of other construction materials including asphalt and ready-mixed concrete. Based in Birmingham, Alabama, Vulcan operates aggregate facilities, serving markets in 20 states, the District of Columbia, Mexico and the Bahamas, and employing over 8,000 dedicated men and women.
Founded by George C. Koss in 1912 in Des Moines, Iowa, Koss Construction Company today is a leading general contractor specializing in highway and airfield construction headquartered in Topeka, Kansas. This nearly onehundred years of history is the foundation that allows Koss to deliver a wide array of products and services to a multitude of owners with a consistent emphasis on safety, quality, and integrity.
Asphalt and aggregate material production and construction company. Providing grading, paving, concrete, grinding, utility adjustment and slurry services.