Born-Digital or AnalogAnalogTranscriptWashington mill. Colorado . Dry concentration process. R. M. News. Sept. 8, 1869. p.4 c.2 Shipments of ores ; works ore, mines ; list. R. M. News. day 11,1875 p.4 c.4 Sampling works moved. R.M.News.Dec.22,1881. p.4 c.3CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Washington mill. Colorado, [630667]. Denver Public Library Digital Collections, accessed 18/02/2026, https://digital.denverlibrary.org/nodes/view/1664302
