Mines & mineral resources, Colorado Boulder county Mining notes. R. M. News. July 13, 1879. p.4 c.l Description of Nederland & .Caribou districts. R. Ps. News. July 15, 1879. p.2 c.l Description; in Caribou & Nederland districts. R. M. News. July 15, 1879. p.2 c.2 Description of mining activities. R. N. T,\Tews. Apr. 1, 1880. p.8 c.3 Discovery; assay, Pumpkin ridge. R. N. News. Apr. 7, 1880. p.8 c.3 Activities; description, Orodelfan smelting works. R. Y<. News. Apr. 13, 1880. p.8 c.4
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