Coal/External Links
From Citizendium - Reading time: 1 min
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- Coal Information From website of the World Coal Institute.
- What is coal?
- Methods of Mining Excellent source of information on coal mining methods.
- Background Information--How is coal mined? From website of the Kentucky Foundation.
- Coal (USGS)
- Coal (EIA)
- Coal at European energy forum
- Open Source Coal — CC-licensed information about coal production in the United States
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