Mines and mineral resources. Colorado. Gilpin county Strike in the Perigo mine. Times F 5, 1900 p.3 c.2 Mining operations. Times F 5, 1900 p.3 c.2 Avon mill and the Nugget placer on North Clear Creek. Extensive operations. Times F 12, 1900 p.3 c.4 Times F 28, 1900 p.12 c.1 Ore shipments. Times Mr 2, 1900 p.17 Mining operations. Times Mr 4, 1900 Times Mr 9, 1900 p.12 c.2
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