2018-04-162022-02-032018-04-162022-02-03https://hdl.handle.net/11124/172205Mine report no. 819.reportsengIn copyright - non-commercial use permitted (http://rightsstatements.org/vocab/InC-NC/1.0/).Ruby Chief Mining and Milling Co.Mines and mineral resources -- Colorado -- Gunnison CountyMining claims -- Colorado -- Gunnison CountyIrwin Mining District (Colo.)Text