Mines and mineral resources. Colorado. Idaho Springs district Proposed development, Bell tunnel lode. R.M.News. Oct.2,1881 p.2 c.2 Description Block lode. R.M.News. Nov.6,1881 p.2 c.1 History & view, Miners sampling works. R.M.News. Activities, mines; list. R.M.News. Activities, mines; list. R.M.News. R.M.News. Activities, Manhattan co.R.M.News. Activities mines & cola; list. Nov.10,1881 p.2 c.2 Nov.17,1881 p.3 c.2 Dec.1,1881 p.3 c.1 Dec.4,1881 p.2 c.4 Dec.5,1881 p.2 c.3 21 R.M.News. Dec-11,1881 p.6 c.2
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