@misc{indiciae2af89901a38b,
  title = {Downflow limestone beds for treatment of net-acidic, oxic, iron-laden drainage from a flooded anthracite mine, Pennsylvania, USA: 2. Laboratory evaluation},
  author = {C.A. Cravotta and S.J. Ward and J. M. Hammarstrom},
  year = {2008},
  doi = {10.1007/s10230-008-0031-y},
  url = {https://pubs.usgs.gov/publication/70033430},
  note = {Source identifier: 70033430}
}