Mines and mineral resources. Colorado. Gilpin county Dollar gold and silver mining company incorporates. R.M.News. Sept. 3, 1878 p.4 c.4 Bullion output; rich strike; Boston and Colorado smelt- er works. R.RA.News. Sept. 6, 1878 p.4 c.l Average return and assay; history. R.I'.News. Sept. 12, 1878 p.4 c.7 Gold shipment, amount; activities Boston and Colorado company. R.M.News. Sept. 21, 1878 p.4 c.6 =History. RX.News. Sept. 24, 1878 p.4 c.4 Mines and companies; list, Gunnell hill. R.M.News. Sept. 28, 1878 p.l c.6
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