Agave Energy Company
Oil & Gas Exploration and Production
Alcan Ingot
Mining
American Maize Production, Inc.
Agricultural
Amoco Corporation
Oil & Gas Production and Processing
Amoco Pipeline Company
Oil & Gas Transportation and Storage
Amoco Production Company
Oil & Gas Exploration and Production
Anschutz Marketing
Oil & Gas Marketing
Aquila Energy Marketing
Oil & Gas Marketing
Arizona Public Service Company
Gas & Electric Utility
Associated Natural Gas, Inc.
Gas Gathering, Treating
Bear Paw Energy
Oil & Gas Exploration and Production, Gathering, Treating
Benjamin Schlesinger & Associates, Inc.
Consultants
Black & Veatch
Engineering Consultants, Power and Infrastructure
Blackwood & Nichols Company, Ltd.
Oil & Gas Exploration and Production, Gathering
Bonny Gathering Company
Natural Gas Gathering
BP
Exploration and Production, Refining and Marketing, Gas, Power and Renewables
Burlington Resources, Inc.
Oil & Gas Exploration and Production, Gathering
Calpine Corporation
Integrated Power Company
Cenex Pipeline
Oil Pipeline
Cepsa/Madrid, Spain
Gathering, Treating, Transportation and Retail Sales
Chemical Lime Company
Chemical Feedstock
Chevron Pipeline Company
Oil & Gas Exploration, Production, Transportation, Refining
Citizens Utilities
Power Generation, Telecom
Colorado Interstate Gas Company
Natural Gas Gathering & Transmissions
City Utilities of Springfield
Municipality
Compressor System, Inc.
Compression Packaging
Conoco, Inc.
Oil & Gas Exploration and Production
Cryenco, Inc.
Manufacturing of Cryogenic Equipment
Desert West Archaeological Services
Environmental Permitting
Destec Energy
Electric Power Generation and Marketing
Devon Energy Corporation
Oil & Gas Exploration and Production
Duke Energy Field
Services
Gathering, Transportation, Production, Marketing & Trading
Duke Energy Gas
Transmission
Major
midstream gas transmission company
Duncan Oil
Oil Exploration and Production
El Paso Global Networks
Natural Gas Transmission, Gathering & Processing, Production, Power Generation
El Paso Field Services
Gas Gathering, Processing, and Transportation
El Paso Natural Gas Company
Gas Transportation
Encana
Independent Oil & Gas Company
Energen
Natural Gas Gathering, Processing & Transportation
Enron Gas Pipeline Corporation
Natural Gas Gathering, Processing & Transportation
Enron Transporation & Storage
Liquids Transportation & Storage
Flint Engineering
Construction Contractor
Forerunner Corporation
Engineering Consultants
Gas Company of New Mexico
Local Distribution Company, Utility
Giant Industries, Inc.
Oil Processing
Hermiston Power Project
Power Generation
Highland Energy
Independent Oil & Gas Company
Icon Construction Company
Construction Contractor
Independent Mobility Systems
Manufacturer/Vendor - Handicap Vans
Interstate Energy Company
Energy Brokers, Marketers
J.M. Huber Corporation
Oil, Gas & Coal Exploration and Production, Processing and Manufacturing
John Zink
Combustion & Air Quality Control Systems
Kinder
Morgan
One of the largest midstream energy companies in the U.S. with more than 30,000 miles
of natural gas and products pipelines
K N Energy, Inc.
Gas Gathering, Processing, Transportation and Marketing
K N Services, Inc.
Energy Marketing
La Plata Electric Association
Utility
Lakehead Pipeline Company
Oil & Gas Transportation
Lantern Petroleum Company
Oil & Gas Exploration and Production
Lawrence-Allison & Associates West, Inc.
Consultants
Louisiana Land & Exploration Company
Natural Gas Gathering & Processing
Mark West Energy Partners, Ltd.
Oil & Gas Exploration and Production, Marketing
Mark West Hydrocarbons, Inc.
Gas Compression, Gathering and Processing
McKay Oil Corporation
Oil & Gas Exploration and Production
Meridian Oil, Inc.
Oil & Gas Gathering, Treating
Michael Charles Slota, Inc.
Consultant
Natural Fuels Corporation
LNG & CNG Marketing
Northern Gas
Gas Pipeline
Northwest Natural Gas Company
Gas Pipeline
Northwest Pipeline Company
Gas Transportation and Storage
Ohio Edison
Electric Utility
Oklahoma Natural Gas Company
Gas Transportation and Storage
Oneok Gas Transportation Company
Gas Pipeline
Onyx Energy Company
Oil & Gas Exploration and Production
Paiute Pipeline Company
Gas Transportation
Pancanadian Petroleum Company
Oil & Gas Exploration and Production
Pennz Energy
Gas Gathering & Processing
Petal
Gas Storage & Transmission
Petroglyph Energy, Inc.
Oil & Gas Exploration
PG&E
– Gas Transmission
California’s largest gas transmission company
PLS Engineering, Inc.
Electrical Engineering Consultants
Portland General Electric
Electric Utility
Presido Gas Company
Gas Exploration and Production, Gathering
Public Service Company of Colorado
Gas and Electric Utility
Public Service Company of New Mexico
Gas and Electric Utility
Pumps & Service, Inc.
Equipment Vendor
Questar Pipeline Company
Gas Transportation and Storage
Reliant
Energy
Gas Gathering, Processing & Transportation
Reliant/Noram
Gas Gathering, Processing & Transportation
River Gas Corporation
Gas Gathering, Treating
Sagle and Schwab Energy Resources
Search Technologies, Inc., South America
Consultant
Sheehan Pipeline Construction Company
Contractor
Sierra Environmental Engineering
Environmental Consultants
SkyGen
Power Generation
Southern Natural Gas
Gas Pipeline, Gathering
Southwire Company
Cable Manufacturing
Texaco Exploration & Production, Inc.
Oil & Gas
Texaco Trading & Transportation, Inc.
Oil & Gas Pipeline and Marketing
Texaco USA, Inc.
Gas Gathering, Processing, Transportation
Thunder Creek Gas Services
Gas Gathering, Processing, Transportation
Torch Energy
Oil & Gas Exploration and Production
Total Petroleum, Ltd.
Transportation and Processing
Town of Ignacio, Colorado
Municipal
Transcontinental Gas Pipeline Corporation
Gas Pipeline
Transwestern Pipeline Company
Gas Pipeline
Trend Exploration, Ltd.
Oil & Gas Exploration and Production
Tristate
Generation and Transmission Association
Electric, Power, Generation, Transmission Association
True Oil Company
Oil Exploration and Production
UMC Petroleum Corporation
Oil & Gas Exploration and Production
Unocal Corporation
Oil & Gas Exploration and Production
Unocal Oil & Gas
Oil & Gas Exploration and Production
Unocal Pipeline Company
Gas Pipleline, Products Pipeline
Vastar Resources, Inc.
Oil & Gas Exploration and Production
Western Gas Resources, Inc.
Oil & Gas, Treating, Transportation
Westport Oil & Gas Company, Inc.
Oil & Gas Exploration and Production
Willamette Industries
Gas Utility
Williams Communications
Telecommunications
Williams
Energy Services
Oil & Gas Exploration, Production & Storage
Williams Field Services
Gas & Liquids Processing and Transportation
