Nickel, George D.2018-11-142022-02-032018-11-142022-02-03https://hdl.handle.net/11124/172738Mine report no. 1251.Typescript (carbon copy).The Ridge mine -- The Ridge-Mexico Mining and Milling Company: shipment of zinc concentrates in 1906 and 1907 -- The Ridge-Mexico Mining and Milling Company: shipment of lead concentrates in 1906 and 1907 -- Ridge mine.reportsengIn copyright - non-commercial use permitted (http://rightsstatements.org/vocab/InC-NC/1.0/).Mines and mineral resources -- Colorado -- Mineral CountyMining claims -- Colorado -- Mineral CountyGeology -- Colorado -- Mineral CountyOres -- Colorado -- Mineral CountyLead ores -- Colorado -- Mineral CountyZinc ores -- Colorado -- Mineral CountyText