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    • Long-Term Mine Soil Weathering and TDS Release 

      Orndorff, Zenah W.; Daniels, W. Lee; Beck, Mike; Eick, Matthew J.; Zipper, Carl E. (Virginia Tech. Powell River Project, 2011)
      The Surface Mining Control and Reclamation Act (SMCRA) of 1977 contained a number of contentious provisions including return to original contour (AOC), long-term liability bonding periods, and return to “equal or better” ...