Mines & mineral resources,COLORADO DENVER Exhibits, mines; list, Natl. expos., Denver. R. M. News. Sept. 20,1882 p.2 c.l Activities, NATIONAL MINING INDUSTRIAL EXPOSITION , Denver. R. M. News. Sept. 21,1882 p.2 c.1 R. M. News. Sept. 22,1882 p.3 c.l R. M. News. Sept. 23,1882 p.3 c.l Activities, Natl, expos. R. M. News. Sept. 25,1882 p.7 c.l Butte exhibit attracts attention, Natl. expos. R. M. News. Sept. 26,1882 p.3 c.l
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