@misc{indiciae427e82e885f9,
  title = {Front Range Infrastructure Resources Project--Aggregate Resources Activities},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1998},
  doi = {10.3133/fs11998},
  url = {https://pubs.usgs.gov/publication/fs11998},
  note = {Source identifier: fs11998}
}