Born-Digital or AnalogAnalogTranscriptmines mineral resources colorado san miguel county Increased activity in Telluride district; butterfly- Terrible, ophir company, Nellie and Ella, Tomboy. Times Ja 13, 1903 p.1G c.2 Alta mill; La sal copper mines in western part of county; claims near placerville. Times Ja 15,, 1903 p.10 c.1 Concentrating plant at pandora; Japan vein, Double eagle group, magnolia group, group, tunnel to drain to Trout Lake. Times Ja 26, 1903 p.9 c.1CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
mines mineral resources colorado san miguel county, [434638]. Denver Public Library Digital Collections, accessed 13/01/2026, https://digital.denverlibrary.org/nodes/view/1428063
