La Plata.smelter. Leadville district colorado Furnaces in operation, 1877. R M N raofx Hall.Hist.Colo.v.2 p.447 history In California gulch. R.M.News.July 18,1880.p.6 c.1 Activities; shipments. R.M.News.Aug.12,1880. p.3 c.1 Lead supply. R.M.News.Feb.13,1880. p.2 c.1 Bullion production; assay. R.M.News.Feb.26,1880. p.6 c.1 Bullion statistics. R.M.News.Mar.11,1880. p.3 c.2 Weekly bullion output; statistics. R.M.News.7une 24,1880.p.3 c.1 Activities. R.M.News.Sept.16,1880.p.3 c.2 Operating. R M.Nows.Oct.16,1880. p.6 c.1
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