Born-Digital or AnalogAnalogTranscriptEmpire, Colorado Mining men satisfied with ore treatment. 1882 smelters use Carter-Bancroft process. R.M.News. Dec. 20, 1882 p.2 e.3 Land slide destroys building. 1947 New mill starts test run on Empire ore. R.M.News.Apr.5,1883 p.3 c.1 Clear Creek county mining town described. . R.M.News.Way 3,1883 p.2 c.1CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
