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Shasta Dam, Shasta County, California. Lowering a sump into bottom of ...
Public domain photograph of 1930s-1940s US industrial development, Second World War, US war production, indusry, no copyright restrictions image - Picryl description
Edwards Air Force Base, North Base, Sump Pump, East of Second Street, ...
Unprocessed Field note material exists for this structure: N727 Survey number: HAER CA-170-RR
Shasta Dam, Shasta County, California. Lowering a sump into bottom of ...
Picryl description: Public domain image of a quarry, mine, excavation or mining site, free to use, no copyright restrictions.