@misc{indiciae75c730812651,
  title = {Geochemical and mineralogical controls on trace element release from the Penn Mine base-metal slag dump, California},
  author = {M.B. Parsons and D.K. Bird and M.T. Einaudi and Charles N. Alpers},
  year = {2001},
  doi = {10.1016/s0883-2927(01)00032-4},
  url = {https://pubs.usgs.gov/publication/70022965},
  note = {Source identifier: 70022965}
}