Colorado. Legislation. Mining Commissioner's opinion on U. S. mining law, approved 1866. R. M. News. July 22, 1867. p.3 c.1 U. S. mining law. R. M. News. Aug. 22, 1867. p.2 c.2 Mining bills; list. R. M. News: Aug. 23, 1872. p.2 c.1 Mining bill; tunnel sites. R. M. News. Aug. 27, 1872. p.2 c.1 I*
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