Mines and mineral. resources. Colorado Clear Creek county Transfers; prospecting; rich strikes, mines; list. Republican. denver Mar. 7, 1881 p.2 c.3 Activities, m ines; list. Rep. Mar. 9, 1881 p.2 c.2 Activities, lodes; list. Rep. Mar. 12, 1881 p.2 c.l Activities, mines; companies, Empire district Rep. Mar. 18, 1881 p.2 c.l Rich strike, Columbian chief mine. Rep. Mar. 19, 1881 p.2 c.2 Assays, mines; list, atmospheric mineral concentrator. Rep. Mar. 21, 1881 p.2 c.3
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