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Interior view of Power House block A-7, showing reinforcing steel and pipe layout: photographic print, 1934 April 25

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

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View of Power House block A-7, from the lower Arizona construction unit, showing form work and pouring arrangement: photographic print, 1934 April 25

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

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Looking upstream in Black Canyon, showing general view of the powerhouse layout, taken from the Nevada valve house bench: photographic print, 1934 April 28

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

Archival Component

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General view of Himix and cement blending plants, with unloading track and aggregate bins above: photographic print, 1934 April 17

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

Archival Component

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Looking upstream in Black Canyon, showing the downstream face of Boulder Dam: photographic print, 1934 April 30

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

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View showing installation of 100-foot drum gates in the Arizona spillway: photographic print, 1934 April 28

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

Archival Component

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Looking upstream in Number 5 Penstock tunnel, showing penstock outlets, man-ways and pedestal recesses: photographic print, 1934 April 28

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

Archival Component

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View of the Nevada intake towers, taken from the Arizona side: photographic print, 1934 April 28

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

Archival Component

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View taken from Himix trestle, showing the Arizona intake towers, and Arizona spillway in background: photographic print, 1934 April 27

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

Archival Component

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Panorama looking downstream in Black Canyon, taken from the Nevada side, showing the upstream face of Boulder Dam, Arizona and Nevada spillways, intake towers, cableways and general construction: photographic print, 1934 May 12

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

Archival Component

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