Mines and mineral resources. Colorado. Idaho Springs district Early history; Spanish Bar, Chicago creek & Grass valley 1859. R.M. News. Apr. 20, 1884 p.3 c.2 Foxhall tunneI activities; lodes; companies; list. R.M. News. Apr. 24, 1884 p.3 c.1 Activities, mines & companies; list; Squirrel gulch activities. R.M. News. May 4, 1884 p.6 c.1 Ore and matt shipments for April; mines; mills; companies; list. R.M. News. May 11, 1884 p.2 c.3 Activities, mines ' lessees; list. R.M. News. May 22, 1884 p.3 c.2
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