Hanson Pipe & Precast

Grand Prairie, Houston, Texas

Northern Concrete Pipe Inc.

Bay City, Mich.

Rinker Materials-Concrete Pipe Div.

Houston

150,001 to 200,000 Hours-U.S. Amcor Precast (Oldcastle)

Ogden (12th St.), Utah

Hanson Pipe & Precast

Fort Smith, Ark.; Apple