Abbott Laboratories
Aerojet Corporation
Alcoa
Allegheny energy, Inc.
ALLETE, INC.
Alliant Energy
Ameren, Inc.
American Express Corporation
Anheuser-Busch Companies, Inc.
Argonne National Laboratory
Arizona State University
AstraZeneca Pharmaceuticals
Avery Dennison Corporation
Baker Hughes Corporation
Battelle
Baxter International Inc.
Bechtel Bettis
Bechtel Corporation
Bechtel Jacobs Company LLC
Bechtel BWXT Idaho
Boeing Company, The
BP Amoco
Brookhaven National Laboratory
BWXT-Y12
Cabot Corporation
Calif. Institute of Technology
Carerstream
Cardinal Health
Cargill Incorporated
Celanese Corporation
CenterPoint Energy
CH2M Hill, Inc.
Champion Technologies, Inc.
Cheniere Energy
Chevron Phillips Chemical Co.
Ciba Specialty Chemicals, Inc.
CITGO Petroleum Corporation
Clean Harbors
Colorado Springs Utilities
ConAgra Foods, Inc.
ConocoPhillips
Constellation Energy Group, Inc.
Combat Service Associates
CSX Corporation
CTEH
Covanta Energy Corporation
DCP Midstream, LP.
Dean Foods
Delta Air lines, Inc.
Dominion Resources, Inc.
Duke Energy Company
Duke University
E.I. du Pont de Nemours Co.
Eastman Chemical, Inc.
Ecolab
EG & G
El Paso Energy Corporation
EORM, Inc.
EPCO, Inc.
Estee Lauder Companies, Inc.
Eugene Water & Electric Board
Exelon Corporation
Fermi National Accelerator Lab.
Fireman’s Fund Insurance, Inc.
Florida Power & Light Company
Fluor Hanford, Inc.
Genentech, Inc.
Georgia Pacific, LLC.
GlaxoSmithkline
Halliburton Company
Harvard University
Hawaiian Electric Company
Hercules Incorporated
Hexion Specialty Chemicals Honeywell International, Inc.
Honeywell Federal Mfg. & Tech.
Huntsman Corporation
Idaho Nat'l. Eng. & Enviro. Lab.
Intel Corporation
International Paper Company
International Truck & Engine, Inc.
Invensys Controls
J.R. Simplot Company
Jacobs Engineering Group
Jet Propulsion Laboratory
Johnson & Johnson
Kellogg Brown & Root (KBR)
Kimberly-Clark Corporation
Knolls Atomic Power Laboratory

Kohler Company
Lansing Board of Water & Light
Lawrence Berkeley Nat'l Lab.
Lawrence Livermore Nat'l Lab.
Liberty Mutual Insurance Co.
Lockheed Martin Corporation
Los Alamos National Laboratory
Louisiana-Pacific Corporation
Lyondell Chemical Company
Magellan Midstream Holdings, L.P.
Marathon Petroleum Company
Mayo Clinic
MeadWestvaco Corporation
Metro Water Reclamation - Chicago  
Micron Technology, Inc.
Midwest Research Institute
Mirant Corporation
Monsanto Company
Nalco Company
National Security Tech, LLC.
NiSource Inc.
Northrop Grumman Newport News
NSF International
Oak Ridge Associated Univ.
Occidental Chemical Corp.
Occidental Petroleum Corp.
Owens Corning
Roche Pharmaceutical-Palo Alto
Rohm and Haas Company
S.C. Johnson & Company, Inc.
SAIF Corporation
Sandia National Laboratory
Schneider Electric/Square D, Inc.
Sempra Energy
Southern California Edison
Southern Company, The
Spectra Energy
Stanford Linear Accelerator Lab.
Stanford University
State of Oregon
Stericycle, Inc.
Sunoco, Inc.
Pacific Gas & Electric Company
Pacific Northwest Laboratory
Personnel Board of Jefferson City.
Port of Portland
Port of Seattle
PPG Industries, Inc.
Princeton University Physics Lab
PSC
Public Service Enterprise Group
Qwest Communications
Reliant Energy
Rio Tinto
Roche Colorado Corporation
TECO Energy, Inc.
Tennessee Valley Authority
TXU Corporation
Teradyne, Inc.
Tesoro Petroleum
United States Enrichment Corp.
United Technologies Company
University of Alabama
University of Arizona
University of California, Davis
University of California, Irvine
University of Maryland
University of Nebraska
US Steel
UT- Battelle Oak Ridge Nat’l Lab
University of Texas, Medical
Valero Energy Corporation
Visteon Corporation
W.L. Gore & Associates
W.R. Grace and Company
Wackenhut Services, Inc.
Wake Forest University
Walt Disney World Company
Washington Closure Hanford LLC.
Washington Group International
Washington Savannah River Co.
Washington University
Weston Solutions, Inc.
Weyerhaeuser Company
Williams Energy
Wisconsin Public Services Inc.
Xcel Energy, Inc.
Yale University