@misc{indiciaeeeab5ddce613,
  title = {Quantity and quality of drainage from the Argo Tunnel and other sources related to metal mining in Gilpin, Clear Creek and Park Counties, Colorado},
  author = {Dennis A. Wentz},
  year = {1977},
  doi = {10.3133/ofr77734},
  url = {https://pubs.usgs.gov/publication/ofr77734},
  note = {Source identifier: ofr77734}
}