A F G
Air Products
Air Liquide
Altajir Glass (Dubai)
American National Can
Amtex Corp.
Anchor Hocking
AquaTech
Beatrice/Hunt Wesson
Certainteed Corporation
Coca-Cola U.S.A.
Coors
Corning Glass
Cristalerias De Chile
Domtar Gypsum
Energy Systems
Exide Technologies
Gallo Glass Co.
Granite Rock
Guardian Industries
Holmegaards Glasvaerker
Ingersoll-Rand
Inland Container
James River Corp.
Johnson Controls
Kaiser Sand & Gravel
Kimble Glass
Lawrence Livermore National Laboratory
Libbey Glass

Miller Brewing Company
Nabisco Brands
Northern California Power Agency
Techneglas TV products
Osram/Sylvania
Owens-Illinois Inc.
Owens-Corning-Fiberglas
PPG Industries, Inc.
Pilkington
Praxair
R.M. Parsons Engineers
Ralphs Market
RMC Lonestar
Ryerson Steel
Johns Manville
Saint Gobain
Seagrams
Sewell Plastics, Inc.
Stauffer Chemical Co.
Thompson Consumers Electronics
Tosco Corporation
Unimin
United Airlines
United States Air Force
United States Coast Guard
U.S. Borax
Veco USA
Weyerhaeuser Company
Wheaton Indust