Tropic mine. Idaho Springs COLORADO Production; operations. R.M. News. Juune 9, 1881 p.3 c.2 Production. R.M. News. June 16, 1881 p.3 c.2 Shipping ore to concentrator; SEATON MOUNTAIN R.M. News. Jvise 21, 1881 p.7 c.2 Ore shipments; production. R.M. News. June 22, 1881 p.3 e.2 Transfer; history; 1nglish capitalists. R .M. News. Jvzie 26, 1881 P.3 c.2
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