3M Company
A-C Compressor Corporation
Acousti-Engineering Company
Akzo Nobel Chemicals, Inc.
Alcatel Network Systems
Alcoa
Allen Stuart Equipment Company
Allied Signal
Allison Transmission
Amcast Automotive
American Synthetic Rubber
Amoco Fabric Filters
Battelle
Bedson Corporation
Behr Heat Transfer
BellSouth Company
Birch Cabinets
Bradford Industries
Charter Steel, Inc.
Delta Airlines
Designed Conveyor Systems, Inc.
Donaldson Company
Dow Corning Corporation
Excelsior-Henderson
Exxon Corporation
Ford Motor Company
Foster Wheeler
Fox Studios
Frigidaire Company
Frito Lay
Gardner Denver Engineered Packaging Center
General Electric Corporation
General Motors Corporation
Georgia Pacific
Goodyear Tire & Rubber Company
Harley Davidson
Hartzell Fan, Inc.
Hayes Industrial Brake
Hendrickson Trailer Suspension Systems

Hewlett Packard Company
Hills, Inc.
Hoechst Celanese Corporation
Hughes Christiansen
Hunt Engine, Inc.
Huntersville Hardwoods
Kimberly-Clark Corporation
Krupp Werner and Pfleiderer Corporation
Lotepro Corporation
Mac Equipment Company
McKenna Engineering & Equipment Co.
Michelin North America, Inc.
Mitsubishi
Moen, Inc.
Nosler, Inc.
Phelps Dodge Incorporation
PPG Industries, Inc.
Precision Powered Product, Inc.
R.R. Donnelly & Sons
Robert Bosch Corporation
Roto-Die, Inc.
Scott Company
Shannon Pump Company
Siemens
Solutia, Inc.
Square D Company
Texas Youth Commission
The Timken Company
The Ohio State University
Uni-Wash, Inc.
United Air Specialists
University of Arizona
Valeo
Vickers, Inc.
Waster Water Treatment, Inc.
Waukesha-Pearce Industries, Inc.
Westinghouse Electric
Weyerhauser Paper Company
Yusa Corporation