Alberta Energy Company Ltd.

Alberta Natural Gas Company

Altagas Ltd.

Alliance Pipe line Ltd.

Amoco Canada Ltd.

ATCO Pipelines

Canadian Occidental Petroleum

Chevron Canada Resources Ltd.

Dome Petroleum Ltd.

Enbridge Pipelines Inc.

Esso Resources Limited

Express Pipeline Ltd.

Farries Engineering

Federated Pipelines

Foothills Pipelines

Gulf Alberta Pipeline Ltd.

Gulf Canada Resources Ltd.

High Level Energy

Inter Pipeline Ltd.

Kinder Morgan

Muskeg River Contractors

Newalta Resources

Nova Chemicals

Nova Chemicals Corporation

Nova Corporation of Alberta

Novalta Corporation

Ocelot Industries Ltd.

Pan Canadian Petroleum Ltd.

Petro Canada Inc.

Samedan Oil Company

Shell Canada Resources Ltd.

Sulpetro of Canada Ltd.

Syncrude

Syncrude Aurora 

Talisman

Terasen Pipelines

TransCanada PipeLines

Union Carbide Red

Vikor Resources

Wainoco Oil & Gas

WestCoast Energy Inc.

WestCoast Transmission Inc.

Westridge Petroleum