AAA Glass Co., Inc.

Air Products and Chemicals Corp.

AGA ( Chile )

American Glass Research

Anchor Glass Containers

Anchor Hocking

Associated Technical Consultants

Balochistan Glass Ltd. ( Pakistan )

Bartlett Collins Glass

California Energy Commission

CertainTeed

CISCO Sand Corp.

Combustion Tec, Inc.

Conalvidrios ( Columbia )

Consumers Glass ( Canada )

Cristalerias Toro ( Chile )

Coors Glass

Department of Energy - OIT

Electric Power Research Institute / CMP

Energetics

Energy and Environment Research Corp

Factory Mutual Insurance

Findlay Refractories

Ferrand Vitrio ( Peru )

FEVISA ( Mexico )

GAF Fiberglass

Gallo Glass Co.

Gas Research / Technical  Institute

GE - EER

GE Lighting

Glaverbel ( Belgium )

Glass Design Inc.

Glass International Publications

Glass Packaging Institute

Glenshaw Glass

Guardian Industries, Inc.

Harbison Walker Refractories ( Mexico )

Indiana Glass

Institute of Gas Technology

International Finance Corp. ( World Bank )

Koch Minerals Company

Kohler

Leone Industries

Libbey Glass

Mahmood Saeed Glass Industry ( Saudi Arabia )

MB Industries ( South Africa )

Merkle Engineers, Inc.

Minteq - Specialty Minerals Inc.

National Silicates ( Canada )

Neff Engineeering

Owens Illinois

Phoenicia Glass ( Israel )

RHI / NARCO Refractories

SIVESA ( Mexico )

Saint-Gobain Containers

Schott Glas (Germany )

Southern California Gas Co.

Ta Hsiang Containers ( Taiwan )

Toledo Engineering Co.

Teltech Resource Network Corp.

The PQ Corporation

Tropicana Glass Products

Toledo Engineering Co.

U.S. Silica Corp.

U.S. Borax Inc.

VitroPar ( Mexico )

Vitrum ( India )

Westinghouse Hanford Co.

Westinghouse Savannah River

Wheaton Glass / Wheaton do Brazil

World Kitchen ( Corning )

Misc. Regional Gas & Electric Utilities, Insurance Co's