Mines and mineral resources. Colorado. Idaho wrings district Sampling mill 8: concentrator being erected; description. R.1:j.News.Jan.15,1882 p.7 c.1 Cost of erection, Humphrey concentrator & stamp mill 1883 New strike; assay; activities, mines & tunnels,list. R.M.News.Jan. .1,1882 p.6 e.2 Activities, mines, list. R.1.".News.Jan.'32,1883 p.7 c.3 Mill returns; mines; list. R.M.News.Apr.1P,1683 p.3 c,2
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