Idaho Falls, Idaho

Hanson Pipe & Precast

Tuscaloosa, Ala.; West Memphis, Ark.; Sacramento (Jackson), Fla.; Kissimmee, Fla.; Rome, Savannah, Ga.; Hattiesburg, I-55, North side, Miss.; Columbus, Ohio; Tualatin, Ore.; Manassas, Va.

Premarc (Cadillac Concrete Pipe)

Cadillac, Mich.

Rinker Materials-Concrete Pipe Div.

Fresno, Calif.; Middletown, Del.; Greenfield, Whitestown, Ind.; Davenport, Iowa; Thomasville, N.C.

50,001 to 75,000 Hours-U.S. Americast Concrete Products

Ashland, Chesapeake, Va.

Cayuga Concrete Pipe (Oldcastle)