Homewood-Thornton Quarry

  Homewood-Thornton Quarry Thornton Quarry, located in Thornton, Illinois, just south of Chicago, is one of the world’s largest aggregate quarries. The quarry spans 1.5 miles, is 0.5 miles broad, and is 450 feet deep at its deepest point. Gallagher Asphalt Corporation has been working on the quarry sites since 1928. A dryland dike spans […]