Kissimmee, Fla.; Salem, Va.

Oldcastle Precast Inc.,

Brookshire, Texas

Superior Concrete Co.

Auburn, Maine

40,001 to 80,000 Hours Hanson Pipe & Precast

Birmingham, Mobile, Ala.; Manassas, Va.

Fewer than 40,000 Hours Hanson Pipe & Precast

Wauregan, Conn.

Hanson Pipe & Precast Hanover Block