AK Steel Co.
American Mechanical
Aristeo Construction Co.
Auto Alliance International
Barton Malow Co.
Bearing Services
C.M.S. Energy Company: Consumers Energy
C&N Manufacturing
Chicago Conveyor Corporation
Chrysler Group, LLC
Comau, Inc.
Commercial Contracting Group
Consolidated Rail Company (Conrail)
Core Electric
Decal Mechanical
Del Ray Connecting Railroad
Demaria General Contracting
DTE Corporation: Detroit Edison & Energy Services
Dura Automotive Systems, LLC
Durr Environmental Genesee Power & Light Excel Corporation
Enco Engineering
Excel Corporation
Fata International
Faurecia North America
First Energy Corporation
Five Star Systems
Ford Motor Company
GE International
GE Power Systems
General Motors Corporation
Grob Systems, Inc.
Grubb & Ellis

Hall Industrial
Hartman-Fabco, Inc.
Headwaters, Inc.
Ideal Contracting
Ingersol-Rand Co.
Johnson Controls, Inc.
K&K Recycling
KUKA Systems North America, LLC
Lansing Board Of Water And Light
Lasalle, Inc.
Lear Corporation
Marathon Oil Company
Maumee Valley Fabricators
Michigan Industrial Group
Michigan South Central Power
Monarch Welding & Engineering
Power Transmission Company
Roncelli, Inc.
Sandusky Coal Docks – Norfolk Southern
Severstal North America
Shanahan Engineering, Inc.
Southern Illinois Power Co
Stenco Construction Company
St. Mary’s Cement, Inc.
St. Vincent’s Hospital-Toledo
Sure Alloy Steel (SAS Global)
Taggart Global, LLC
Toyota Motor Corporation
Tri-Tec, LLC
U.S. Army Tacom Facility
U.S. Steel-Great Lakes Works
Vanderlande Industries
Walbridge-Aldinger Company
Waste Management
Woodbridge Corporation
City of Wyandotte