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 ore 34 min, 2 apr 1977 anni – 21 ore 24 min, 12 lugl 1977 anni)
Aggiunto al nastro di tempo:
Data:
19 ore 34 min, 2 apr 1977 anni
21 ore 24 min, 12 lugl 1977 anni
~ 3 months and 11 days