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Subject
- Power resources[remove]3
- Natural gas2
- Biodiesel fuels1
- Coal-fired power plants1
- Electric power-plants1
- Factory and trade waste1
- Hazardous wastes1
- Interconnected electric utility systems1
- Jet planes--Fuel1
- Natural gas pipelines1
- Natural gas--Storage1
- Nuclear power plants1
- Petroleum1
- Power-plants1
- Solar energy1
- Wind power1