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Names
- United States. Congress. House. Committee on Interior and Insular Affairs. Subcommittee on Mining and Natural Resources5
- United States. Congress. House. Committee on Interior and Insular Affairs3
- Trumka, Richard L., 1949-2
- United States. Congress. House. Committee on Ways and Means2
- Rogers, Harold, 1937-1
- Udall, Morris K.1
- United Mine Workers of America1
- United States. Bureau of Mines1
- United States. Congress. House. Committee on Energy and Commerce1
- United States. Department of the Interior1
- United Steelworkers of America1
- Young, Don, 1933-20221
