Bussen Quarries Inc

Central Stone Company

Mining

RiverStone Group, Inc.

Mining

Davenport, IA

Riverstone Quarry, Inc.

Mining

Villa Ridge, Missouri

Darwin River Quarries

Construction

Manton, Northern Territory

Beelman River Terminal

Transportation/Trucking/Railroad

St Louis, Missouri

Alphen Control

Automation Machinery Manufacturing

Kemp Quarries

Mining

Pryor, Oklahoma

Anchor Stone Company

Mining

Tulsa, OK

Milestone Materials

Building Materials

Onalaska, Wisconsin

New Frontier Materials

Construction

Maryland Heights, Missouri