Peterson, Carl M.2019-12-132022-02-032019-12-132022-02-03https://hdl.handle.net/11124/173929Donor: Colorado Mining Association.Photographed by Carl M. Peterson.View of a mineral processing plant site, with buildings and smokestack.10 x 8 inchesblack-and-white photographsCopyright retained by Colorado Mining Association.Mineral processing plantsStillImage