Mines and mineral resources. Colorado. Gold Hill district. Description of new lode, Left Hand creek; Union mill yield. R.M. News. Mar. 25, 1861 p.5 c.1 History; number of mines recorded; mills; lodes; companies; list. R.M. Nevis. Apr. 5, 1861 p.2 c.2 Explorers visit; activities, lodes; mills; list; history R.M. News. Apr. 10, 1861 p.2 c.2 Ore specimens for cabinet, lodes & co.; list. R.M. News. Apr. 16, 1861 p.3 c.l President named; new discovery described. R.&7. News. June 4, 1861 p.5 c.l
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