@misc{indiciaec4368e0b2005,
  title = {Atlas of western surface-mined lands: coal, uranium, and phosphate},
  author = {A. Kent Evans and E.W. Uhleman and P.A. Eby},
  year = {1978},
  url = {https://pubs.usgs.gov/publication/fwsobs78\_20},
  note = {Source identifier: fwsobs78\_20}
}