@misc{indiciae836ead618cee,
  title = {USGS compilation of geographic information system (GIS) data representing coal mines and coal-bearing areas in China},
  author = {Michael H. Trippi and Harvey E. Belkin and Shifeng Dai and Susan J. Tewalt and Chiu-Jung Chou},
  year = {2015},
  doi = {10.3133/ofr20141219},
  url = {https://pubs.usgs.gov/publication/ofr20141219},
  note = {Source identifier: ofr20141219}
}