@misc{indiciae4f93911967ec,
  title = {Modes of occurrence of mercury and other trace elements in coals from the warrior field, Black Warrior Basin, Northwestern Alabama},
  author = {S. F. Diehl and M. B. Goldhaber and J. R. Hatch},
  year = {2004},
  doi = {10.1016/j.coal.2004.02.003},
  url = {https://pubs.usgs.gov/publication/70026366},
  note = {Source identifier: 70026366}
}