ARC Resources Ltd

OGY Petroleum Ltd

Addison Energy Inc

PanArctic Oil Ltd

Alberta Energy and Utilities Board

PanCanadian Petroleum Ltd

Alberta Research Council

Paramount Resources Ltd

AltaGas Ltd

Penn West Resources Ltd

Archer Resources Ltd

Petromet Resources Ltd

Apache Canada Ltd

Pembina Pipeline Corporation

Anderson Exploration Ltd

PetroCanada

Amoco Petroleum

Phillips Petroleum Canada Ltd

Aquilo Energy Inc

Pinnacle Resources

AEC East

Place Resources Corporation

Big Sky Resources

Poco Petroleum

Blue Parrot Resources Inc

Prime West Energy Inc

Canadian 88  Energy Corp

Pro-More Engineering Inc

Canadian Conquest

Ranger Oil

Canadian Fracmaster

Reserve Royalty Corporation

CDN Cometra Inc

Rider Resources Ltd

Canadian Occidental

Rife Resources Ltd

Chevron

Rigel Oil and Gas Ltd

Compton Resources Corp

Dowell a div of Schlumberger

Crestar Energy

Sandwell Inc

Discovery West

Schlumberger Canada Ltd

Encal Energy Ltd

Seagull Energy Canada Ltd

EnCana Corp

Shell Canada Ltd

Enron Oil Ltd

Spirit Corporation

Exxon Exploration

Servipetrol

Gascan Resources Ltd

Sunoma Energy

Haliburton Energy Services

Symmetry Resources Inc

Hallwood Petroleum Inc

Trican Well Services Ltd

Husky Oil

Talisman Energy

IMC Kalium Colonsay

Tarragon Oil and Gas Ltd

Jacques Whitford Environmental

Thunder Energy Inc

Miller and Lents Ltd

Union Pacific Resources Inc

Mudco Services Ltd

Van Horne Oil and Gas Company

Magellan Petroleum Australia

Winterhawk Petroleum

Nexen a div of CanOxy

Z.I. Probes Inc

Star Oil & Gas Ltd