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Names
- United States. Bureau of Mines4
- United States. Congress. House. Committee on Interior and Insular Affairs. Subcommittee on Mining and Natural Resources3
- United States. Department of Labor2
- United States. Mine Safety and Health Administration2
- Carter, Jimmy, 1924-1
- National Coal Association1
- United Mine Workers of America1
- United States. Congress. House. Committee on Interior and Insular Affairs1
- United States. Department of the Interior1
- United States. Occupational Safety and Health Administration1
- United States. Office of Surface Mining Reclamation and Enforcement1
- United States. Surface Mining Control and Reclamation Act of 19771
