@misc{indiciae18293557feaa,
  title = {Geochemical processes in ground water resulting from surface mining of coal at the Big Sky and West Decker Mine areas, southeastern Montana},
  author = {D.W. Clark and D. A. Nimick},
  year = {1996},
  url = {https://pubs.usgs.gov/publication/70094766},
  note = {Source identifier: 70094766}
}