Mines and mineral resources. Colorado. Jefferson county Sale of copper claim near line of Clear Creek County. Times 1900 Looking for copper on Bear and Cub creeks up from Morrison near Jefferson-Clear Creek county line. Times Ja 29, 1901 p.9 c.2 Discovery of copper near headwaters of Cub creek. Times F 27, 1901 p.12 c.3 Tunes Mr 8, 1901 p.4 c.5 Times Mr 11, 1901 p.9 c.3
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