Born-Digital or AnalogAnalogTranscriptmining hydraulic. Placer Placer mines in Tarryall District in Park Co. Mi-Co Park pa p. 8 Placer mines in Fall River, Silver Creek area, Clear Creek Co. Mi-Co Clear Creek ali 1 Placer mining in Four Mile Dist., Routt Company, 1893 Mi-Co Routt Fo Placer mining in San Miguel Co. Mi-Co San Miguel sa Blue River gold fields, Summit Co. Mi-Co Summit bl Description of various methods of placer mining. "4i-Co Summit bl p. 4-6CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
