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Unreclaimed hardrock mines
United States. Congress. House. Committee on Natural Resources. Subcommittee on Energy and Mineral Resources.1993
Páginas: 264
Género: Strip mining
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Implementation of the Surface Mining Control and Reclamation Act of 1977
United States. Congress. House. Committee on Interior and Insular Affairs. Subcommittee on Energy and the Environment.
1978
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