Portland Mine (108)

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Mine name Portland Mine
State Colorado
County Teller
Author Ransome, F.L.
North face of No. 3, Captain vein, sheeted structure in breccia. Direction north Portland Mine 5th level. Cripple Creek District. Teller County, Colorado. October 3, 1903. Published as Plate 14-A in U.S. Geological Survey Professional paper 54, 1906.
Caption North face of No. 3, Captain vein, sheeted structure in breccia. Direction north Portland Mine 5th level. Cripple Creek District. Teller County, Colorado. October 3, 1903. Published as Plate 14-A in U.S. Geological Survey Professional paper 54, 1906.