Archival objects in this container: Looking upstream along Nevada approach to Boulder Dam. Note rubble wall being built and excavation for tower footings: photographic print, 1935 November 26 Looking upstream at the Nevada spillway: photographic print, 1933 July 22 Looking upstream at the upper end of Number 1 plug, showing forms for the intake transition: photographic print, 1934 December 19 Looking upstream in Black Canyon, showing general view of the powerhouse layout, taken from the Nevada valve house bench: photographic print, 1934 April 28 Looking upstream in Number 2 diversion tunnel, showing the concrete pipe line from the pumpcrete gun to the upstream plug: photographic print, 1934 October 31 Looking upstream in Number 2 downstream plug, showing water conduit being placed: photographic print, 1935 October 28 Looking upstream in Number 4 raise and plug: photographic print, 1934 March 28 Looking upstream in Number 5 Penstock tunnel, showing penstock outlets, man-ways and pedestal recesses: photographic print, 1934 April 28 Looking upstream toward Boulder Lake, from Observation Point: photographic print, 1935 August 21 Looking upstream toward the Arizona powerhouse, showing 18-foot penstock openings: photographic print, 1934 February 20 Looking upstream toward the Number 1 upstream plug, showing approximately 7,100 second feet of water being discharged: photographic print, 1935 March 26 Nevada intake tower roofs. Note concrete shingle arrangement: photographic print, 1935 September 27 Nevada intake towers: photographic print, 1933 October 31 Nevada powerhouse, showing the reinforcing and walls around the penstock openings. Pumpcrete machine is in the butterfly valve gallery between the rock abutment and the turbine room: photographic print, 1934 October 30 Nevada spillway weir: photographic print, 1933 December 27 Nevada spillway, looking upstream: photographic print, 1933 October 07 Night photograph of powerhouse construction: photographic print, 1934 June 19 Placing concrete lining in Arizona upper penstock tunnel: photographic print, 1934 January 27 Switchyard control house, yard, and present sub-station. View taken looking toward Boulder Dam: photographic print, 1935 August 26 Telephoto of the Nevada valve house. Note the forms for the roof beams being built: photographic print, 1935 April 25 Telephoto view of foundation forms for the Arizona powerhouse, taken from Lookout Point: photographic print, 1931 April 01 The Nevada valve house with the refrigeration plant below: photographic print, 1935 July 26 The Nevada valve house, from the Arizona side: photographic print, 1935 May 27 Top of Boulder Dam, from the Nevada side. Arizona intake towers in background: photographic print, 1934 June 22 Unloading 8-foot interior dimension valve house outlet pipe with the government cableway. View taken on the Nevada side, looking upstream: photographic print, 1934 April 24 Load More
