@misc{indiciae73936c8d0806,
  title = {Mercury methylation in mine wastes collected from abandoned mercury mines in the USA},
  author = {J. E. Gray and M.E. Hines and H. Biester and B.K. Lasorsa},
  year = {2003},
  url = {https://pubs.usgs.gov/publication/70026023},
  note = {Source identifier: 70026023}
}