Murley, J. A., Jr.2020-10-072022-02-032020-10-072022-02-03https://hdl.handle.net/11124/175300Image from Book 4, Rio Grande Railroad covered album. Caption reads: "3356." Accompanying text reads: "Murley, J. A., Jr. Jan 3, 1947, Jumbo Drifters. This shows two miners in 20-10 station with jumbo drifters in position for driling new breast of 20-10 incline."Donor: Friends of Mineralogy, Colorado Chapter.Two miners stand with jumbo drifters attached to a railed platform in position at the 20-10 incline underground at the Gilman mine.3 1/2 x 5 inchesblack-and-white photographsUnderground mining -- ColoradoMining -- Machinery and equipmentViews -- UndergroundZinc mines and mining -- ColoradoMinersMining machineryStillImage