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American Exploration
Halliburton Energy Services
Amirmex Oil & Gas Co.
Hilton Petroleum Ltd.
APEX Petroleum Engineering
Intrepid Production
Apollo-Smith Exploration
Interline Resources Corporation
Arch Petroleum Inc.
KFG Petroleum Corporation
Armstrong Oil & Gas
Key Production Company
Baker & Hostetler, P.C.
L.G. & E. Natural
Ballard Petroleum, L.L.C.
Macauley, A. G. Trust
Barrett Resources
Merrion Oil & Gas
Basin Operating Company
Natural Gas Pipeline
Brown, Charles W.
N.G. Resources Corporation
Calaway Oil & Gas Company
OGI Inc.
Captiva Rsources, Inc.
Pacific Enterprises Oil Co.
Coastal Chemical
Petrogulf Corporation
Colorado Attorney General
Pioneer Oil and Gas Company
Colorado Interstate Gas
Prima Exploration
Conley P. Smith Operating Co.
Questa Engineering
Cramer Oil Company
Richland Petroleum Corporation
Daube Company
Sante Fe Energy
DiGiacomo & Jaggers, P.C.
Stanley Energy
Don Stinson, P.E.
Star Resources
Ener-Tech Associates Inc.
Summit Energy
Ewing & Ewing, P.C.
Teton Oil & Gas
Fancher Oil Company
TRANSOK
FAN Energy Inc.
Williams Pipe Line Co. /DLS
First National in Palm Beach
Wyoming Resources Corporation

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