@misc{indiciae5da845a3981b,
  title = {From in-situ coal to fly ash: A study of coal mines and power plants from Indiana},
  author = {Maria Mastalerz and J.C. Hower and A. Drobniak and S.M. Mardon and G. Lis},
  year = {2004},
  doi = {10.1016/j.coal.2004.01.005},
  url = {https://pubs.usgs.gov/publication/70026359},
  note = {Source identifier: 70026359}
}