Born-Digital or AnalogAnalogTranscriptmines mineral resources colorado silverton district Activities, Sultan mountain tunnel, ores, assay. R. Y. ews. July 13, 1876 p.4 c.3 History, mines; list. R. PEI. News. :dug. 22, 1876 p.4 c.4 Miners investigate cave; minerals found; list. R. M. News. Dec. 3, 1876 p.4 c.5 Proposed test, Walker lightning process. R. M. News. Dec. 9, 1876 p.4 c.4CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
mines mineral resources colorado silverton, [435144]. Denver Public Library Digital Collections, accessed 15/03/2026, https://digital.denverlibrary.org/nodes/view/1429107
