@misc{indiciaeafc6963bdd4d,
  title = {Finding Trapped Miners by Using a Prototype Seismic Recording System Made from Music-Recording Hardware},
  author = {Thomas L. Pratt},
  year = {2009},
  doi = {10.3133/ofr20091095},
  url = {https://pubs.usgs.gov/publication/ofr20091095},
  note = {Source identifier: ofr20091095}
}