Born-Digital or AnalogAnalogTranscriptMines & mineral resources, COLORADO Dumont district Discovery & valuable abandoned claims. R.M.News.Sept.17,1880.p.2 c.3 Discovery on Spencer mountain; Wales & co. purchase idle smelter. R.M.News.Sept.25,1880.p.2 c.2 Development & mining industry. Vickers.Clear CrEEK.& Boulder. p.329 Cost of treating ores; plan for smelter. R. h". News. Sept. 19, 1880.p.2 c.5CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
