@misc{indiciaee5a5c22013bb,
  title = {Subsurface exploration for stripping coal on Lower Deep Creek, Homer district, Kenai coal field, Alaska},
  author = {Farrell F. Barnes and Daniel Sokol},
  year = {1955},
  doi = {10.3133/ofr556},
  url = {https://pubs.usgs.gov/publication/ofr556},
  note = {Source identifier: ofr556}
}