Murley, J. A., Jr.2020-10-072022-02-032020-10-072022-02-03https://hdl.handle.net/11124/175133Image from Book 4, Rio Grande Railroad covered album. Caption reads: "3363." Accompanying text reads: "Murley, J. A., Jr. Jan 3, 1947, Four foot standard Symons cone crusher - Gilman Mill Crushing department."Donor: Friends of Mineralogy, Colorado Chapter.Symons cone crusher at the Crushing department, Gilman mill, underground.8 x 10 1/2 inchesblack-and-white photographsUnderground mining -- ColoradoMineral processing -- Machinery and equipmentViews -- UndergroundZinc mines and mining -- ColoradoCrushing machineryStillImage