Mines and mineral resourCES . Colorado. EL Moro dist. Coke shipments to LEADVILLE R.M.Neivs.Jan.1,1880_ p,6 c.2 Coke; coal; production; ovens; yield.; shipments; transportation. R.M.News.Mar.6,1880 p.8 c.5 Coal & coke statistics; Hollander colonists refuse work. R.M.NewsMav 20,1880 p.8 c.4 October coal 8c coke shipments; list; comparison,1879.R.M.News.Dec.3,1880 p.1 c.3
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