Boston and Colorado smelting company Silver bar for exhibit, Cincinnati exposition; value. R.M.News. Sept. 9,1874 p.4 c.1 Bullion shipments; value, district; list, Colorado. Silver bullion shipment; value, Gilpin county,Colo. Silver bullion shipment; value, Central City Colo. , R.M.News. Dec. 17,1874 p.4 c.2 ding works, improvements, monthly ore shipment. R.M.News. Nov. 10, 1882 g.3 e.1 Sampling works, Georgetown, Colorado. R.M.Nt- Dec. 17, 1882 p.7 c.1
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