@misc{indiciae8c13c7540b2c,
  title = {Brecciated and mineralized coals in Union County Western Kentucky coal field},
  author = {J.C. Hower and D.A. Williams and C.F. Eble and T. Sakulpitakphon and D.P. Moecher},
  year = {2001},
  doi = {10.1016/s0166-5162(01)00047-7},
  url = {https://pubs.usgs.gov/publication/70023016},
  note = {Source identifier: 70023016}
}