Mines and mineral resources. Colorado. Pitkin county Company; mill; mine list. R.M. News.June 18,1883 p.6 c.1 Ore exhibit, Denver.exposition. H.M.News.July 30,1883 p.8 c.2 R.t''News.July 17,1883 p.E c.3 R.r" :News.July 21,1883 p.8 c.2 R.M.News.Aug.27,1883 p.6 c.4 R.I".News.Sept.17,1883 p.6 c.1 Companies; mines; districts; activity. R.M.News.July 6,1883 p.3 c.2 Tunnel; mines; smelter; activity. RMNews.July 12,1883 p.2 c.3
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