Mines & mineral resources, COLORADO Costilla Co. Mining interests increasing. F61W RQU R. M. News. Sup. July 30, 1882 p.5 c.6 Placer gold; iron. R. Iii. News. Dec. 25, 1882 p.9 c.3 Rich iron and gold discoveries; placers; smelter; prospectors. R. M. News. <'ipr. 28, 1881 p.6 c.4 History. 11. M. News. Jan. 1, 1882 p.12 c.6 Description.R. M. News. May 2, 1883 p.4 c.3 Iron ore from placer mines, exhibit, Denver exposition R. bi. News. Aug. 11, 1883 p.3 c.1
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