2019-12-032022-02-032019-12-032022-02-03https://hdl.handle.net/11124/173528Donor: Colorado Mining Association.Caption reads: "Assay laboratory, Grand Junction, Colorado."10 x 8 inchesblack-and-white photographsCopyright retained by Colorado Mining Association.Uranium mines and mining -- Colorado -- Mesa CountyAssaying -- Colorado -- Mesa CountyStillImage