ABB Air Preheater Inc. 

ACME Brick 

ADM (Archer-Daniel-Midland)

Agmet Metals, Inc.

AirConsult Technologies

AirPol Inc.

Air and Noise Products, Inc.

Allis Mineral Systems 

Alstom Power

Alumax Mill Products, Inc.

American Filtration Systems, Inc.

Antarctica Supply Company 

Aristech Chemical Corp. 

Ashland Chemical

Auckland International Airport Ltd.

Bayfront Medical Center 

BHA Group Inc.

Boral Brick

Borg Austral, S.A.

Borgess Medical Center 

CAPCO Management Group Inc. (Chowchilla Biomass Power Plant Assoc.)

Caterpillar Inc.

Children's Hospital of Alabama 

China Ecotek Corp.

City Medical Waste Services, Inc.

CMIT

Coletora Pioneira Indústria Comércio e Serviços Ltda.

Combustion Power Company, Inc.

Corn Plus Cooperative

Cornell University 

CRI, Inc. 

Cross Tessitore and Associates, PA

Danville Correctional Center 

Day and Zimmerman Inc. Company

Duke University

DuPont

E.I. DuPont de Nemours and Company, Inc.

Energy & Environmental Research Corporation (EER)

Evanston Hospital 

F&L Cogeneration National 

Fergus Falls, MN, City of

FLS Miljo, Inc.

Fluor Daniel

Frito Lay Inc.

Gemtron Corporation 

General Atomics

General Shale Brick

Gerber Products Company

Harding Lawson Associates

Harding ESE

Harvard University 

Huntsman Corporation

Indian Head Naval Surface Warfare Center

International Waste Industries 

IT Corporation

Joy Energy Systems

Kaiser Aluminum and Chemical Corp.

Kent County Memorial Hospital

Kimberly-Clark Corp.

KOSTE

Kruger Inc.

L&M Pyropower

Lagoven, S.A. 

Lubrizol Petroleum Chemicals Company

MAC Equipment, Inc.

Madison Energy Recovery, Inc.

McBurney Corp.

McDonnell Douglas 

Medico Environmental Services Inc.

Mesquite Lake Associates, Ltd.

Metallurg Vanadium Corp.

Metso Minerals

Midway Environmental Management Company, Inc. 

Mt. Sinai Medical Center 

MSE Technology Applications, Inc.

Mueller Brass Co.

Natec Resources, Inc.

Northern States Power Company

Ohio State University 

Paramount Mechanical Corp.

Pechiney Rolled Products 

PMC Specialties Group Inc.

Process Combustion Corp.

Pyropower Corp.

Recovery Corporation of America

Recovery Corporation of Michigan 

RMF (Ross, Murphy, Finklestein) Engineering, Inc.

St. Nicholas Cogeneration

St. Joseph's Hospital

Sanwei (Sunic AirPol)

Schmidt Associates, Inc.

Scott Paper Company

Seo Kyoung/TPS (Total Power Systems)

Sherex Chemical Company, Inc.

Sony Magnetic Products

Sparrow Hospital 

Sunoco Corp.

Svedala Industries, Inc. 

Swindell Dressler Intl Co.

TPS (Thermo Process Systems, Inc.)

Tennessee Valley Authority (TVA)

Techneglas Inc.  

Tersel Equipment Industries, Ltd.

Tri-State Brick and Tile Co.

Trumbull Memorial Hospital 

Unifield Engineering

Uniroyal Chemical Company, Inc.

United McGill Corp.

University of Rochester (Strong Hospital) 

Vanguard Research Inc. 

Von Roll Inc.

Wagner Enterprises 

Waste Management of North America, Inc.

Wisconsin Electric Co.