Mines and mineral resources. COLORADO Custer co. Activities, mines; list; Dillingham works. Rep. Mar. 26, 1881 p.2 c.l Activities, mines; list. REPUBLICAN Mar. 29, 1881 p.2 c.l Empire g. & s. min. Co. proposes incorporation; Copper Bottom No. one mine. Rep. Apr. 5, 1881 p.2 c.2 Cottonwood mine rich strike, Silver Cliff dist. Rep. Apr. 9, 1881 p.2 c.l Activities, Game Ridge min. co. prpperty. Rep. Apr. 15, 1881 p.2 c.l Mines from which mineral has been extracted & sold; list; yield, prior to Jan. Rep. Apr. 18, 1881 p.6 c.2
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