Title	Formats
American Coal Council
American Coke and Coal Chemicals Institute
International Energy Agency
Mine Safety and Health Administration
National Mining Association
New York Mercantile Exchange (NYMEX)
Office of Surface Mining Reclamation and Enforcement
The Coal Information Network
U.S. Census Bureau, Foreign Trade Statistics
U.S. Senate Committee on Energy and Natural Resources
U.S. House Committee on Energy and Commerce
U.S. Geological Survey
World Coal Institute