Murley, J. A., Jr.2020-10-072022-02-032020-10-072022-02-03https://hdl.handle.net/11124/175138Image from Book 4, Rio Grande Railroad covered album. Caption reads: "3117." Accompanying text reads: "Murley, J. A., Jr. Jan 3, 1947, Panning Final Zinc product for Grade Mill, (49% grade) Gordon Craig, Mill Foreman and Harry Neil, Mill Shift Boss Panning (on left) finishing product of Zinc concentrate for visual analyis of final grade."Donor: Friends of Mineralogy, Colorado Chapter.Two men in hard hats pan zinc concentrate for visual inspection, underground at the Gilman mill.3 1/2 x 5 inchesblack-and-white photographsUnderground mining -- ColoradoMineral processing -- Machinery and equipmentViews -- UndergroundZinc mines and mining -- ColoradoStillImage