Mines and mineral resources. Colorado. county Near Quartz Hill Tunnel Company. Times Mr 11, 1900 p.4 c.4 California mine. Times Mr 11, 1900 p.4 c.4 Mining operations. Times Mr 12, 1900 p.5 c.2 Times Mr 21., 1900 p.12 c.1 Times Mr 22, 1900 p.14 c.4 Times Mr 26, 1900 p.3 c.2 Times Mr 28, 1900 p.12 c.1 Gilpin Eastern syndicate buys placer ground on North Clear Creek. Times Mr 29, 1900 p.12 c.2
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