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Displaying results 830051 - 830060 of 844179

One of four photographs, forming a panorama of operations being carried on at canyon rim, on Nevada side. Photo was taken from Arizona spillway site. To the left is shown Black Canyon Highway. High level mixing plant will be located behind fill on the road. To the right is shown highway extension road to Nevada spillway. Note shovel boom projecting at former site of Lookout Point: photographic print, 1932 August 12

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

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One of four photographs, forming panorama of operations being carried on at canyon rim, on Nevada side. Photo was taken from Arizona spillway site. To the left is shown Black Canyon Highway. High level mixing plant will be located behind fill on the road. To the right is shown highway extension road to Nevada spillway. Note shovel boom projecting at former site of Lookout Point: photographic print, 1932 August 12

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

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Three hundred boxes of dynamite were used in spectacular blast which demolished the old Lookout Point. Photograph taken from the new Lookout Point, on Black Canyon Highway: photographic print, 1932 August 16

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

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Blasting usually scheduled for 11:30 a.m., and billowing dust dislodged from canyon rim completely fills the canyon: photographic print, 1932 August 16

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

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Blast on cableway bench excavation, on Arizona side, above dam site. Photograph taken from lower portal of Railroad tunnel Number 1: photographic print, 1932 August 24

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

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Photograph of blast at same place shown above, taken from opposite, on Black Canyon Highway: photographic print, 1932 August 16

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

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Huge billows of rock and dust pour over canyon rim and descend to river below: photographic print, 1932 August 24

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

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Blast on Arizona intake tower excavation, which has filled canyon with smoke and dust. Upper steel suspension bridge shown in background: photographic print, 1932 August 16

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

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Looking across reservoir area, which will be submerged when Hoover Dam is completed. Flat-topped hill in center of photograph will form a small island and ridge in foreground will be submerged: photographic print, 1932 August 15

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

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Visitors to project are intrigued by the multiplicity of dish pans used as reflectors, which are scattered all over the project where night work takes place. This is the crew that installs them: photographic print, 1932 August 15

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

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