@misc{indiciaeb8247ceba179,
  title = {The relation of geology to stress changes caused by underground excavation in crystalline rocks at Idaho Springs, Colorado},
  author = {Fitzhugh T. Lee and John F. Abel and Thomas C. Nichols},
  year = {1976},
  doi = {10.3133/pp965},
  url = {https://pubs.usgs.gov/publication/pp965},
  note = {Source identifier: pp965}
}