Archival objects in this container: Looking upstream in lower Number 2 plug, showing pipe in place: photographic print, 1935 November 25 Looking upstream in Upper Number 3 plug, showing pumpcrete and pipes: photographic print, 1934 August 25 Looking upstream into Number 1 plug, showing the placing of the high pressure valves and method of pouring: photographic print, 1934 December 19 Looking upstream into the pipe gallery in the Nevada powerhouse, showing beams and concrete: photographic print, 1934 October 30 Looking upstream toward Boulder Dam, showing excavation of the downstream cofferdam: photographic print, 1935 January 28 Looking upstream toward Number 3 downstream plug. Note clean-up operations, getting ready for carpenters: photographic print, 1935 October 28 Looking upstream toward the Arizona powerhouse: photographic print, 1935 March 26 Nevada spillway weir, showing forms for downstream abutment: photographic print, 1933 September 15 Nevada valve house, from the Arizona: photographic print, 1935 June 24 Number 5 unit of Nevada powerhouse, showing Number 3 pour completed: photographic print, 1934 May 29 Telephoto view of Arizona powerhouse units: photographic print, 1934 December 19 Telephoto view of the Nevada valve house, from the Arizona side: photographic print, 1935 February 25 Telephoto view, from the Arizona side, showing the central section of the powerhouse: photographic print, 1935 May 27 The run-around excavated in the old top heading adit, to facilitate handling concrete for Number 4 plug: photographic print, 1935 March 04 Track layout above Himix and cement blending plants, showing bins where rock and sand are dumped: photographic print, 1934 April 17 Trash rack at the upper portals of diversion tunnel Number 2: photographic print, 1934 May 25 Two-hundred ton two-way trailer, for transporting sections of 30-foot penstock pipe: photographic print, 1933 December 15 View looking into powerhouse block A-5: photographic print, 1934 March 28 View of Nevada spillway: photographic print, 1934 June 21 View of power house cable gallery, elevation 653, looking downstream on the Arizona side: photographic print, 1935 April 10 View of switchyard, showing control house, foundations, and general excavation: photographic print, 1935 September 27 View of the open cut portion of the switchyard control circuit tunnel. Shovel is excavating for the switchyard, and the building in the foreground is the power sub-station. The Babcock and Wilcox Company plant can be seen in the extreme background: photographic print, 1935 June 01 View taken from Arizona intake towers, looking toward Arizona spillway. Note excavation for the float well supply line: photographic print, 1935 August 26 View taken from downstream Nevada plug adit, looking toward Number 2 downstream plug: photographic print, 1935 August 27 View taken from the Nevada side, looking downstream toward Boulder Dam: photographic print, 1935 July 26 Load More
