Mines & mineral resources, Colorado. Gold Hill district. Geologic formation; lodes; list. R. M. News. Jan. 29, 1868. p.2 c.l Activities, Hoosier mine. R. 11. News. Aug. 3, 1869. p.4 c.2 Description, Belcher mine; activities. R. M. News. Dec. 12, 1879. p.3 c.2 Mill activities. R. M. News. Oct. 26, 1870. p.4 c.2 Petzite discovery, 1872; production, 1874-1880; gold discovery, Sunshine, 1874. Baker & Hafen.History.Colorado. v.2 p.536
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