Mines & mineral resources, COLORADO Cotopaxi DISTRICT Mentioned. R. M. News. Nov. 3, 1880 p.2 c.2 Discovery, best galena veins in state. R. M. News. Nov. 16, 1880 p.3 c.3 Discovery; assay, Saltiel mt. R. M. News. Jan. 5, 1881 p.2 c.2 Activities, dists., list, coal, fire-clay .& soapstone discovery.R. M. News. Jan. 18, 1881 p.3 c.2 Activities; mines, list. R. M. News. Feb. 1, 1881 p.2 c.4
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