2020-10-072022-02-032020-10-072022-02-03https://hdl.handle.net/11124/175232Donor: Friends of Mineralogy, Colorado Chapter.A mine building and wooden structures on a waste rock pile, with a wooded slope and other structures in the background, Gilman 1917.5 1/2 x 3 1/2 inchesblack-and-white photographsUnderground mining -- ColoradoMine dumpsZinc mines and mining -- ColoradoMine buildings -- ColoradoStillImage