APPROVED SOURCES

CONCRETE BARRIER

SUPPLIER	PLANT LOCATION	IDENTIFICATION
Cretex Concrete Products , Inc.	Des Moines, IA	Cretex
Cretex Concrete Products , Inc.	Iowa Falls, IA	Cretex
Coreslab	Omaha, NE	C R B
Cramer & Associates	Des Moines IA	C A
Rinker Materials Corp.	Valley, NE	R M C - V
Wieser Precast, Inc.	Williamsburg, IA	W P