Mines and mineral resources. Colorado. Gregory district. Offer for tailings refused, Bobtail lode, Smith & Chaffee mill. R.M. News. Mar. 21, 1863 p.2 c.l Transfers of claims; mill men active. R.M. News. Mar. 24, 1863 p.2 c.l Activities, lodes; mills; list. R.M. News. thy 4, 1863 p.2 c.4 mill work; experiments on gold saving; activities. R.M. News. May 9, 1863 p.2 c.l Early difficulties in mining. R.M. Nevis. iiday 14, 1865 p.2 c.l
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