@misc{indiciae0e6c1a59f9ce,
  title = {An air concentrator for very low grade Colorado Plateau uranium ores},
  author = {Lorin Rollins Stieff and E.S. Erickson},
  year = {1953},
  doi = {10.3133/tei307},
  url = {https://pubs.usgs.gov/publication/tei307},
  note = {Source identifier: tei307}
}