Morris, Richard Bennett2019-12-112022-02-032019-12-112022-02-03https://hdl.handle.net/11124/173769Donor: Colorado Mining Association.Photographed by Richard Bennett Morris.A workman at a piece of machinery marks a timber; caption reads: "641."5 x 7 inchesblack-and-white photographsCopyright retained by Colorado Mining Association.Underground mining -- ColoradoMining -- Machinery and equipmentMining machinery-- Colorado -- San Juan CountyStillImage