The Surface Mining Control and Reclamation Act of 1977 (SMCRA) is the primary federal law that regulates the environmental effects of coal mining in the United States. SMCRA created two programs: one for regulating active coal mines and a second for reclaiming abandoned mine lands. (19 St. 34 Min, 2 Apr 1977 Jahr – 21 St. 24 Min, 12 Jul 1977 Jahr)
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Datum:
19 St. 34 Min, 2 Apr 1977 Jahr
21 St. 24 Min, 12 Jul 1977 Jahr
~ 3 months and 11 days