@misc{indiciae286200460e6a,
  title = {Data for four drill holes, Kalamazoo porphyry copper deposit, Pinal County, Arizona},
  author = {Maurice A. Chaffee},
  year = {1992},
  doi = {10.3133/ofr92283a},
  url = {https://pubs.usgs.gov/publication/ofr92283A},
  note = {Source identifier: ofr92283A}
}