View of the main batching and mixer control station low-level concrete mixing plant. The operators at this station control the charging of aggregates, cement and water into two mixers and also controls discharge of the mixers. Site Name: Hoover Dam (dam)
Caption at bottom of image reads: "Night view of Boulder Dam as the visitors see it from the Nevada lookout point." Boulder Dam was officially re-named Hoover Dam in 1947.
A black and white image of people standing by the Boulder Dam Pier sign, which is draped with rattlesnakes. Note: Boulder Dam was officially renamed Hoover Dam in 1947.
An image of unidentified men near a boat on Lake Mead during the Boulder Dam decennial event. Note: Boulder Dam was officially renamed Hoover Dam in 1947.