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251 - 275 of 1090 Items << < 6 7 8 9 10 11 12 13 14 15 > >>
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Shows the road approaching Hoover Dam from the Nevada side and the top of the dam during construction. Note the rubble wall being built and excavation for tower footings. Trucks, hoisting machinery, and cables with trams are visible. The intake...
1935-11-26
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An expansive view of the upstream face of Hoover Dam during construction. Various buildings and structures, workers, cars and equipment can be seen. Hoisting machinery and concrete pouring forms can be seen also.
1935-02-25
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Shows the interior of a power house cable gallery during the construction of Hoover Dam. It is illuminated with electric lighting.
1935-04-10
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Center of image shows two Arizona intake towers under construction. Right hand tower is more complete than left hand tower, which is just beginning to take shape. A crane is positioned above and between the towers. In right forground can see...
1934-04-27
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Shows the face of the dam with construction going on on the intake towers and the power houses. Also shows cableways and mountains behind dam.
1934-12-03
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Shows the reinforcing framework for the Arizona power house and the locations for the turbine rooms, front room galleries, and penstocks. Some buildings, trucks, tunnel openings, and construction workers are visible.
1934-10-30
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Aerial view of the downstream side of Hoover Dam showing the intake towers and spillways. Construction equipment, buildings, and roads are visible. There are some cars on the road crossing the dam.
1935-06-01
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View looking under the Arizona spillway bridge as it is being constructed. A train car is silhouetted under the bridge and various pieces of construction equipment are visible, including cables, hoisting machinery and scaffolding.
1935-03-26
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View of the top of Hoover Dam during construction with intake towers and a spillway in the background. A temporary bridge and cableway with trams span the canyon. Construction workers are on top of the dam, working with the concrete.
1934-10-17
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View of construction on the Nevada power house. The dam face is seen in the upper right. Unfinished penstock portals are seen in the canyon wall. Temporary buildings and construction equipment are seen in the cofferdam between the Nevada and...
1934-06-21
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View of construction inside the no. 4 penstock raise. Construction workers stand on the framework and platforms inside the unfinished tunnel.
1934-08-21
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View of construction workers on framework inside the no. 4 penstock tunnel portal during construction of Hoover Dam.
1934-09-27
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Construction workers supervise the lifting of a 30-foot section of penstock pipe from a trailer by a cableway in the Hoover Dam construction site.
1934-07-20
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Close-up of construction on the no. 3 Arizona intake tower. Steel framework and rods protrude from the top of the tower.
1934-07-24
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View of construction of the Arizona intake towers from the Nevada side of Black Canyon. Part of the dam is visible in the lower right corner. High scaling equipment, temporary bridges, hoisting equipment and cables can be seen.
1934-05-29
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This photograph shows a pipeline at the Dam site. The pipeline appears to have a valve that can be opened or shut with a wheel turning device. The pipeline appears to be attached to a concrete form shown in the lower right of the photo. The outer...
2024-04-24
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Shows valve house outlet pipes being uloaded with a cableway. A construction worker is standing on top of a pipe as it is being lifted off a railroad car.
1934-04-27
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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. Vehicles and temporary buildings are seen in...
1934-02-20
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Aerial view of the Hoover Dam construction site, looking upstream on the Colorado River in Black Canyon. Concrete pouring forms and other construction equipment are seen on the partially finished dam face and in the river bed below it. The...
1934-04-01
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Aerial view of Hoover Dam construction site looking upstream on the Colorado River in Black Canyon. Concrete pouring forms are seen around the dam wall in the center of the picture. Buildings, vehicles and roads are seen in the river bed...
1933-12-15
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View of construction on the upstream face of Hoover Dam. Construction equipment, including a Marion type 490 electric dragline, concrete pouring forms, scaffolding and temporary buidlings are seen at the site.
1934-01-24
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View of construction taking place at the upper portals of the diversion tunnels for Hoover Dam. Power shovel, buildings, roads, and scaffolding can be seen. Only the exterior portions of the tunnels are visible.
1933-11-30
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View taken high above Hoover Dam construction site showing the forms for poruing the concrete. There are trucks, buildings, a railroad, and roads visible. The Colorado River can be seen above the site. Other construction equipment shown includes...
1933-10-15
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This photograph shows two construction workers standing on the mountainside in front of a tunnel. They appear to be unloading dirt and rocks from a container over the side of the mountain.
2024-04-24
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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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