Portland Mine (109)

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Mine name Portland Mine
State Colorado
County Teller
Author Ransome, F.L.
Portland Mine. Sixth level, north face of No. 8.  Captain vein. Cripple Creek District. Teller County, Colorado. October 3, 1903. Published as Plate 14-b in U.S. Geological Survey Professional paper 54, 1906.
Caption Portland Mine. Sixth level, north face of No. 8. Captain vein. Cripple Creek District. Teller County, Colorado. October 3, 1903. Published as Plate 14-b in U.S. Geological Survey Professional paper 54, 1906.