Keywords: Placer mining operation, unidentified location, ca 1912 (THWAITES 389).jpeg check categories 27 October 2016 2 Photograph Creator John E Thwaites Caption on image Placer mining in Alaska PH Coll 247 869 Subjects LCTGM Gold mining--Alaska; Hydraulic mining--Alaska; Gold mining equipment--Alaska Subjects LCSH Placer mining--Alaska--Equipment and supplies depicted place Alaska ca 1912 Institution University of Washington UWASH-THWAITES-source accession number thwaites 389 PD-old-auto-1923 1940 Information field Order Number THW377 Images from the John E Thwaites Photographs of Alaska Collection to check Gold mining in Alaska Hydraulic mining |