Welles, A. M. (Alonzo Merritt)2018-06-152022-02-032018-06-152022-02-03https://hdl.handle.net/11124/172371Mine report no. 904.Includes map.Typescript (carbon copy).Report Oro mine -- Report Ridgeway & Alaska Mines -- Ridgeway workings (map) -- The Silverton Smelting and Mining Co.reportsengIn copyright - non-commercial use permitted (http://rightsstatements.org/vocab/InC-NC/1.0/).Mines and mineral resources -- Colorado -- Park CountyMining claims -- Colorado -- Park CountyMines and mineral resources -- Colorado -- San Juan CountyMining claims -- Colorado -- San Juan CountyConsolidated Montgomery Mining District (Colo.)Animas Mining District (Colo.)Oro Mine (Colo.)Ridgeway Mine (Colo.)Alaska Mine (Colo.)Text