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- Independent Petroleum Association of America
- United States Department of Energy
- United States Department of Energy - Energy Efficiency and Renewable Energy
- American Petroleum Institute
- Energy Information Administration Petroleum
- The American Petroleum Institute
- US National Commission on Energy Policy--Oil Shockwave Report
- BP Global
- Alexander's Gas and Oil Connections
- NaturalGas.org
- The American Gas Association
- The Natural Gas Supply Association
- Center of Excellence for Hazardous Materials Management
- Responsible Resources
- Manny Can Effort
- Institute for Energy Research
- Political Capitalism
- Green Tracking Library
- Wind Power Facts
- Gas Spot Prices
- The Center for Liquefied Natural Gas
- El Paso Corporation--A Major Gas Pipeline Operator
- The World Coal Institute
- Energy for the 21st Century: Coal
- U.S. Department of Energy Clean Coal Program
- Wyoming Coal
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