@misc{indiciaed9cf1c120bea,
  title = {Environmental geology of the Summitville mine, Colorado},
  author = {John E. Gray and Mark F. Coolbaugh and Geoffrey S. Plumlee and William W. Atkinson},
  year = {1994},
  doi = {10.2113/gsecongeo.89.8.2006},
  url = {https://pubs.usgs.gov/publication/70017365},
  note = {Source identifier: 70017365}
}