Sayer, D. J.2017-09-252022-02-032017-09-252022-02-03https://hdl.handle.net/11124/171645Mine report no. 268."Mine Manager's Report, page 337-A, State Bureau of Mines, State of Colorado."Typescript (carbon copy).reportsengIn copyright - non-commercial use permitted (http://rightsstatements.org/vocab/InC-NC/1.0/).Mines and mineral resources -- Colorado -- San Miguel CountyMining claims -- Colorado -- San Miguel CountyIron Springs Mining District (Colo.)Text