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2576 - 2600 of 3004 Items << < 99 100 101 102 103 104 105 106 107 108 > >>
2576 - 2600 of 3004 Items << < 99 100 101 102 103 104 105 106 107 108 > >>
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Construction workers are seen working amid the wood and steel framework during construction of the Arizona power house. Unfinished penstock tunnel portals can be seen in the canyon wall in the background.
1934-06-14
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View of construction on the Arizona spillway and the no. 4 penstock raise. Black Canyon surrounds the construction site. An electric dragline and trucks are seen on the dirt road above the spillway.
1934-08-21
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Close-up of framework inside the unfinished opening of a penstock tunnel. Construction workers can be seen in the foreground on what appears to be a transportation track.
1934-06-21
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Close-up of the partially-completed construction on the Arizona spillway.
1934-07-24
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Aerial view of the Hoover Dam construction site in Black Canyon. Construction on the intake towers is seen in the canyon walls behind the dam face and construction on the power houses is seen in the river bed in the foreground. Cables crossing the...
1934-07-31
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View of Hoover Dam and power house under construction. Buildings and structures, concrete pouring forms, cables, and a crane can be seen. Some construction workers and trucks are also pictured. Above the dam part of an intake tower is sticking up.
1934-05-29
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This photograph shows construction workers using a hose attached to a tank filled with water to water down the dirt at the Dam site. The water tank is attached to a truck bed. Three workers are operating the water hose. Two other workers are...
2024-05-21
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This is a close-up of open end round metal forms that are sitting in a ditch. The metal forms are surrounded by a wooden enclosure.
2024-05-21
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Shows the Nevada spillway in the background. Taken from the Arizona side of the dam, this view shows a temporary stairway, cables, hoisting machinery and other construction equipment.
1934-03-24
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Aerial view of the Hoover Dam construction site, looking upstream on the Colorado River in Black Canyon. The partially finished dam face is covered with concrete pouring forms and other construction equipment. Unfinished penstock openings are seen...
1934-03-01
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Close-up of scaffolding and construction on one of the power houses in the Hoover Dam construction site. Sections of pipe and other construction equipment can be seen on the ground in the foreground.
1934-03-28
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Several men inspect a two hundred ton two-way trailer loaded with construction materials. The trailer stands next to a railroad track, and in front an industrial building. Mountains can be seen in the background.
1933-12-15
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View of construction on the bases of the Arizona intake towers in the Hoover Dam construction site in Black Canyon.
1933-12-27
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Shows site where the intake towers are being constructed on the Arizona side of Hoover Dam. Shows high scaling equipment and various structures including the boom derrick.
1933-12-01
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Shows the Nevada spillway weir under construction. Scaffolding, temporary stairways, a construction shed, and other equipment can be seen.
1933-10-30
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Aerial view of the Colorado River flowing through Black (not Boulder) Canyon.
2024-05-21
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This photograph shows a close-up of a construction worker's hands as he places a rock into the end of a tool. Beneath the workers hands is a wooden form that is partiioned off and holds various size rocks.
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Close-up of the Nevada spillway, looking downstream, during the construction of Hoover Dam. Cables, construction equipment, and roads are visible.
1933-10-07
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Photo shows tower and cableway, a hoisting house, and several other structures and some vehicles. There are mountains and rocks in the scene.
1933-09-19
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The Colorado River flows out of the diversion tunnels in the Hoover Dam construction site in Black Canyon. Bridges are seen crossing the river and the canyon.
1933-06-16
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View of the temporary dike created to divert the Colorado River into the diversion tunnels. Dump trucks and construction workers are seen on the temporary pile bridge and the portals of diversion tunnels no. 3 and 4 are seen in the canyon wall in...
1932-11-14
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Four standing locomotives are seen on the railway tracks in the gravel plant yard. A freight car can be seen behind one of the locomotives.
1932-05-15
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Close-up of enormous smoke and dust clouds filling Black Canyon during rock blasting for construction of Hoover Dam.
1932-08-16
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Photo shows various buildings and structures, railroad tracks, trucks and power lines. There is blasting taking place in the background between the mountains.
2024-05-21
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Two construction workers at the Hoover Dam site working with heavy machinery.
2024-05-21
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