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Displaying results 792941 - 792950 of 831098

Nevada valve house roof, looking upstream. Note low strength pedestals and double layer of railroad iron being placed: photographic print, 1935 August 27

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

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Switchyard control house, yard, and present sub-station. View taken looking toward Boulder Dam: photographic print, 1935 August 26

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

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View of Arizona side of lower portals clean-up: photographic print, 1935 August 26

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

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Nevada construction adits, valve house, and plug adit portal. Note absence of upstream end of lower portal road tunnel: photographic print, 1935 August 21

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

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View of Nevada side of lower portals clean-up: photographic print, 1935 August 26

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

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View taken from downstream Nevada plug adit, looking toward Number 2 downstream plug: photographic print, 1935 August 27

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

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Looking upstream toward Boulder Dam and power house: photographic print, 1935 September 26

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

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From top of Boulder Dam, looking down on power house. Roof slab is practically completed, and canyon wall gutters are in place: photographic print, 1935 September 26

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

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President Roosevelt dedicating Boulder Dam: photographic print, 1935 September 30

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

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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

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

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