Valley, Minn.

Rinker Materials-Concrete Pipe Div.

Sealy, Texas

100,001 to 150,000 Hours-U.S. Amcor Precast (Oldcastle)

Nampa, Idaho; Ogden (Wall Ave.), Utah

California Concrete Pipe (Oldcastle)

Stockton, Calif.

Cretex Concrete Products North

Elk River, Shakopee, Minn.

Geneva Pipe Co.