@misc{indiciaef29495c75685,
  title = {Coal Reserves of the Matewan Quadrangle, Kentucky - A Coal Recoverability Study},
  author = {Timothy J. Rohrbacher and Dale D. Teeters and Gerald L. Sullivan and Lee M. Osmonson},
  year = {2003},
  url = {https://pubs.usgs.gov/publication/70005373},
  note = {Source identifier: 70005373}
}