Ref.: Eckel, Edwin B. (1997),Minerals of Colorado, updated & revised: 21; Rocks & Min.: 65:61, Rocks & Min 70:5 pp 298-310.
A silver mine located in T. 9 S., R. 80 W., over 5 miles East of Leadville in upper Iowa Gulch, below Mount Sherman at the base of the Iowa Amphitheater at 12,200 feet of altitude. Started 1968-1970. Reopened 1975-1982. Produced 10 million oz. Ag.
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