Black and white image of the main construction site from the downstream side of Hoover (Boulder) Dam.

Black and white image of the main construction site from the downstream side of Hoover (Boulder) Dam.

From the Sister Klaryta Antoszewska Photograph Collection (PH-00352). Protestors holding a demonstration at the Test Site. 

An image showing a downstream aerial view of the Hoover (Boulder) Dam construction site.

At top of map: ' United States Department of the Interior, Geological Survey. Professional paper 712-C, plate 1. Prepared on behald of the U.S. Atomic Energy Commission.' At bottom of map: 'Base from U.S. Geological Survey, Caliente, Death Valley, Goldfield and Las Vegas, 1954. 100,00-foot grid based on Nevada coordinate system, central zone.' 'Hydrogeology by I. J. Winograd, 1965; geology by William Thordarson.' Relief shown by contours and spot heights. Shows township and range lines. Includes diagram of downward and upward cross-flow of water. Includes bibliographical references and index. Contour interval 200 feet. Scale 1:250,000 (W 117°--W 115°/N 38°--N 36°). Series: Professional paper (Geological Survey (U.S.), 712-C. Issued as plate 1 from Hydrogeologic and hydrochemical framework, south-central Great Basin, Nevada-California with special reference to the Nevada Test Site. Prepared on behalf of the U.S. Atomic Energy Commission by Isaac J. Winograd and William Thordarson. Published 1975 by U.S. Govt. Print. Off. in Washington.

Boulder Dam, looking upstream June 27, 1933 2262 is written at the bottom of the photo. Site Name: Hoover Dam (dam)