Ahlstrom Fiber

Air Liquide

Air Products & Chemicals

Akzo Nobel Chemicals

Alabama River Pulp

Allied Signal

American Cyanamid

Amgen, Inc.

Anheuser-Busch

Aristech Chemical Corp.

Arkwright, Inc.

Asten Johnson

Aventis Cropscience

Basell Polyolefins

BASF       

Bayer Corporation

Benjamin Moore

Bestfoods

Bio-Rad Laboratories

Boehringer Ingelheim

Boston Scientific

BP Amoco Chemicals

California Portland Cement

Chevron

Chiron Diagnostics

City of Dayton

Colgate Palmolive

Continental Cement

CUNO, Inc.

Cytec Industries

Danisco Sweeteners

Decoma International

Degussa

Delphi Automotive

Diesel Technology

Dominion Nuclear

Dow Corning

Duke Power

DuPont  Chemicals

DuPont-Dow Elastomers

E. I. Dupont de Nemours

Eli Lilly and Company

Erachem

Ergon Refining

ESSROC Cement

Estee Lauder

Falconbridge Ltd.

FMC Biopolymer

Formosa Plastics

Fuel Cell Energy

Garelick Farms

Gencore

General Motors

Genzyme Corporation

Georgia Pacific

Gerber Scientific

Gortons

Haverhill Paperboard

Hershey Company

Holcim

Honeywell

Hydrocarbon Technologies

Hydrogen Source

International Paper

International Flavors & Fragrances

Invista

Johnson Polymer

Kanzaki Specialty Papers

Kraft Food, Inc.

Lafarge Canada

Lafarge North America

Lehigh Heidelberg Cement

Lyondell-Citgo Refining L.P.

MA Biolabs

Magnesium Elektron (MEI)

Mannington Mills

Marathon Ashland

Massachusetts Biologic Labs

MECS

MedImmune

Merck

MI/SWACO

Miller Brewing

Millipore Corporation

Mississippi Lime

Mold Control Systems

National Starch & Chemical

Novartis Pharmaceuticals

Nuvera Fuel Cells

Ocean Spray Cranberries

OFS Fitel

OMYA

Ondeo Nalco

Ontario Power

Owens Corning

Performance Fibers

Phelps Dodge

Plug Power, Inc.

PPG Industries

Praxair, Inc.

Proctor & Gamble

PSEG Power of CT

Red Gold

Refined Sugars, Inc.

Rhodia

River Point Lace

Rocky Mountain Steel

Sara Lee Foods

Saudi Aramco

Schering-Plough

Scios, Inc.

Sepracor, Inc.

Sigma Aldrich

Solutia

Specialty Minerals

St Mary's Cement

TAMKO Roofing

T-Graphic Engineering

UBC Mining Engineering

Uniroyal Chemical Company

United Technologies Research

U.S. Filter

UTC Power

Vision-Ease Lens

Westinghouse Savannah River

Westvaco Corporation

Wheelabrator

Wyeth Pharmaceuticals

Wyeth-Ayerst Pharmaceutical

Wyeth-Lederie Vaccines

Zarafshan-Newmont Venture

Z-Tech LLC