Collins, Arthur L.Sayre, Hal2018-10-292022-02-032018-10-292022-02-03https://hdl.handle.net/11124/172634Mine report no. 1110.Typescript (carbon copy).reportsengIn copyright - non-commercial use permitted (http://rightsstatements.org/vocab/InC-NC/1.0/).Rollins Mining CompanyMines and mineral resources -- Colorado -- Gilpin CountyOres -- Colorado -- Gilpin CountyOre-dressing -- Colorado -- Gilpin CountyMining leases -- Colorado -- Gilpin CountyText