- Abbott Laboratories
- Aculight
- Air Liquide
- Air Products and Chemicals, Inc.
- Alcan Rolled Products Co.
- Amgen Inc.
- Ampacet Corporation
- ARCO
- Ashland Oil
- Ball State University
- Bayer
- Baxter
- Berlex
- Boeing
- BP Products North America, Inc
- Centeon
- C.F. Industries
- Citgo
- Clear Edge
- CMC/ICOS
- Colorcon
- Commonwealth Edison
- ConAgra
- Confidential Semiconductor Client (Chandler, AZ)
- Corn Products
- Covance
- Criterion Catalyst
- Crystal Clean
- Cultor Food Science
- Decco
- Dendreon
- Destec Energy, Inc.
- Dominion Energy
- Duke Energy
- Dupont Chemical Company
- Eli Lilly and Company
- Equistar
- ExxonMobil
- Federal Express
- Flint Hills
- FLIR Systems
- Fluor Constructors Indiana
- Fred Hutch Cancer Research Center
- Gartland Foundry
- GSK
- Hanford Closure
- Heritage Crystal Clean
- Heritage Environmental Service
- Holland Applied Technology
- Hydrite Chemical
- Indiana Power and Light
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- Infinity Internet
- Jacobs Applied Technology
- Johnson Controls
- Kaiser Permaneante
- Keil Chemica
- Leupold and Stevens
- Linde Gases
- Linear Technology
- Liposome
- Liquid Air Engineering Corp.
- LSI Logic
- Lyondell/Equistar Chemicals L.P.
- Marathon/Ashland
- Maxim Integrated Products
- Microchip
- Micronutrients
- MicroVision
- Molecumetics
- Monon Corp.
- Murphy Oil
- National Starch and Chemical Co.
- Nestle
- NIPSCO
- ON Semiconductor
- Oregon State Hospital
- Oregon State University
- Pfizer Inc.
- Port of Portland
- Praxair
- Primary Energy
- PSI
- Rhone-Poulenc
- Seattle Genetics
- Shell Chemical Company
- Solar Energy Industry
- Southern Energy
- State Line Energy LLC
- Stepan Chemical
- Targeted Genetics
- Texaco Refining
- TOSCO
- TransAlta
- Triquint
- University of Washington
- Unoven
- VertellusRexam Metallising
- Virginia Mason
- Wafertech
- Washington State University
- White Construction
- W.R. Grace
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