Archival objects in this container: Third millionth cubic yard of concrete being lowered to Boulder Dam: photographic print, 1934 December 05 Top of Boulder Dam, looking toward the Arizona side. Arizona spillway and intake towers in the background: photographic print, 1934 October 17 Trains on railroad bench hauling concrete to Hoover Dam: photographic print, 1933 August 12 Upstream face of Boulder Dam, and the Arizona intake towers: photographic print, 1935 January 28 Upstream face of Boulder Dam, looking downstream from the upstream cofferdam. Arizona intake towers on left, Nevada intake towers to the right: photographic print, 1935 January 28 Upstream plug in diversion tunnel Number 3, after excavation of raise and upstream uptake tower was completed: photographic print, 1933 October 30 View from the Arizona spillway bridge, looking downstream into Number 4 raise, showing general construction methods: photographic print, 1935 February 25 View from the crest of Boulder Dam, looking downstream on the powerhouse. Note the numerous roof trusses in place, and the valve houses in the background: photographic print, 1935 June 01 View from the top of Boulder Dam, looking downstream on the power houses, showing the valve houses and lower cofferdam in the background: photographic print, 1935 February 25 View from top of Boulder Dam, looking toward power house, valve houses, and lower portals of diversion tunnels: photographic print, 1935 October 28 View of Power House block A-7, from the lower Arizona construction unit, showing form work and pouring arrangement: photographic print, 1934 April 25 View of power house pump gallery, elevation 625, looking downstream on the Arizona side: photographic print, 1935 April 10 View of the drum gates in the Arizona spillway: photographic print, 1934 June 21 View showing installation of 100-foot drum gates in the Arizona spillway: photographic print, 1934 April 28 View taken from adit, showing Number 1 pour in downstream Number 2 diversion tunnel plug. Cribbing for use as temporary pipe supports: photographic print, 1935 September 27 View taken from Himix trestle, showing the Arizona intake towers, and Arizona spillway in background: photographic print, 1934 April 27 View taken from Number 2 Arizona derrick, showing Nevada spillway in the background: photographic print, 1934 March 24 View taken from the Arizona side, showing the intake towers and the upstream face of Boulder Dam: photographic print, 1935 March 26 View taken from top of Boulder Dam, looking down on power house, valve house, and lower portals: photographic print, 1935 August 26 A view of Boulder Dam lake and reservoir area from Observation Point: photographic print, 1935 March 04 Aerial view, looking upstream toward Boulder Dam: photographic print, 1935 June 04 Arizona powerhouse, from the downstream cofferdam: photographic print, 1935 January 28 Arizona powerhouse, from the Nevada valve house bench: photographic print, 1934 May 29 Arizona spillway, looking upstream: photographic print, 1933 June 27 Arizona spillway, looking upstream: photographic print, 1934 May 25 Load More
