Mobile, Ala.; Tucson, Ariz.; Wauregan, Conn.; Macedonia, Ohio; Oklahoma City; Grand Prairie, Longview, Texas

Lake View Concrete Products Co.

Lake View (Sibley), Iowa

NC Products (Oldcastle)

Fayetteville (Vander B), N.C.

Rinker Materials-Concrete Pipe Div.

Napa, Calif.; Atlanta (Lithonia, Stockbridge); Indianapolis; Westfield, Mass.; Kansas City, Mo.; Reno, Nev.; Cleveland; Pittsburgh; Myrtle Beach, S.C.; Baytown (Setco), El Paso, Texas;

Fewer than 25,000 Hours-U.S. Rinker Materials-Concrete Pipe Div.

Fort Wayne, Ind.; Grand Island, Neb.

150,001 to 200,000 Hours-Canada Inland Pipe Limited