Born-Digital or AnalogAnalogTranscriptHidden treasure mining company Dimensions for stone mill, Black Hawk district, Colorado. R. M. News. Sept. 23, 1880.p.2 c.2 Gold retort shipment, Nevadaville dist., Colorado. R. 111. News. pr. 30, 1880. p.3 c.1' Deposits gold retorts, Colorado. R. M. News. Aug. 5, 1880. p.3 c.2 Stamp mill; erecting machinery, Black Hawk, Colo. R. M. News. Dec. 11, 1880. p.3 c.2 Mill activities; production, Colo. R. M. News. Dec. 16, 1880. p.6 c.2CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
