Brookshire, Houston, Texas

Precast Concepts

Henderson, Colo.

Pretech Corp.

Kansas City, Kan.

Rinker Materials-Concrete Pipe Div.

Miami, Plant City, Fla.; Frederick, Md. (D.C.); Las Vegas; Rosharon, Texas (Bay Concrete)

Vanguard Precast

Topeka, Kan.

75,001 to 100,000 Hours-U.S. Amcor Precast (Oldcastle)