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276 - 300 of 1090 Items << < 7 8 9 10 11 12 13 14 15 16 > >>
276 - 300 of 1090 Items << < 7 8 9 10 11 12 13 14 15 16 > >>
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View of construction of the Arizona spillway. Concrete pouring forms are attached to the partially finished concrete walls. A dirt road and temporary buildings can be seen in the background.
1933-07-22
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Construction workers are seen working on the concrete pouring forms below a cofferdam in the Hoover Dam construction site. Concrete begins to set in the forms. A dragline can be seen in the distance and lines for high scalers are seen on the cliff...
1933-06-27
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Exterior view of diversion tunnels at the Hoover Dam site during construction. Photo shows the Colorado River and scaffolding around the partially constructed tunnels.
2024-04-25
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An aerial view of the Colorado River and Black Canyon during the early stages of Hoover Dam construction. The photo was taken from near the top of the dam site, on the Nevada site. It shows a building, roads, and temporary bridges spanning the...
2024-04-25
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Close-up of construction workers installing the foundations of a trash rack in front of the portal of diversion tunnel no. 2. This is where the first pay concrete was poured.
1932-03-07
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View of Hoover Dam in the later stages of construction. The Colorado River can be seen above the dam. The intake towers now rise behind the dam and this view also shows concrete forms, hoisting equipment and a tram running across a cable high...
1934-07-31
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Overhead view of the construction of Hoover Dam in Black Canyon with the Colorado River visible above the dam site. In the photo are concrete forms, various construction buildings, a train winding along the side of the canyon, high scaling and...
1933-09-22
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View of the buildings and structures forming the high level concrete plant at the Hoover Dam construction site.
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View from downstream on the Colorado River of Hoover Dam construction. Scaffolding and wooden concrete pouring forms are still visible on the dam wall and in the riverbed. The dam wall is almost complete and construction on the intake towers has...
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Construction inside of diversion tunnel no. 4. Steel beams rigged with electric lights frame the walls and ceiling of the tunnel. A construction truck and workers are seen on the tunnel floor. In the distance a gantry crane can be seen.
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View of the beginning of Hoover Dam contruction at the bottom of Black Canyon. Various pieces of equipment, trucks, workers, etc. are visible including a crane suspended above the construction site. The view is from downstream.
1933-06-06
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Night view of the Colorado River flowing through the Hoover Dam construction site in Black Canyon. Catwalks are seen suspended over the river. The site is illuminated by electric light.
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Blasting in Black Canyon for construction. Construction equiqment can be seen along side the Colorado River.
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View taken far away of Hoover Dam. Very little detail is visible but shows the terrain and mountains surrounding the dam.
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Aerial view of Hoover Dam looking from the side. The face of the dam is visible as are the intake towers behind it. Part of Lake Mead (the reservoir) is visible. The spillways can also be seen as can roads leading to the the dam and across it.
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Aerial view of Hoover Dam and surrounding area taken from the side. Shows the downstream face, the intake towers, the spillways and the reservoir (Lake Mead). Roads leading to the dam can also be seen.
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View of downstream face of Hoover Dam showing the power houses and tops of the intake towers.
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Shows construction of Hoover Dam from the downstream side. Concrete pouring forms are shown as the face of the dam takes shape. One of the intake towers is under construction. A temporary suspension bridge is visible and cables span the canyon...
1934-04-28
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Aerial view of Hoover Dam and the surrounding area showing Lake Mead (the reservoir) and part of the Colorado River. Water is flowing from the outlet works, and the intake towers are visible behind the dam. Shows the downstream face of the dam.
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Panoramic view of Hoover Dam and area including Fortifiction Hill in background. The photo was taken looking towards the downstream face and shows the power houses, some of the portals to the diversion tunnels, the Colorado River, and Lake Mead...
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Close-up of the concrete pouring forms for the face of Hoover Dam. Construction workers can be seen.
1933-12-27
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Aerial view of Hoover Dam showing the downstream face, the intake towers, and the spillways. Lake Mead (reservoir) is forming above the dam and roads are visible around and leading to the dam.
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Shows construction at the lower portal of Hoover Dam. Part of the bridge is visible as are trucks, buildings, and construction workers. Part of the Colorado River is visible and also the wall of Black Canyon.
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View of a transport bus called a "Big Bertha", transporting construction workers to the Hoover Dam construction site. A car is visible behind the truck and there are pipes in the background of the photo which were used in the dam's construction.
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Downstream face of the completed Hoover Dam with the diversion tunnels in use. The outlet works and power houses are visible. A cableway spans the canyon and some transmission towers are visible high up on the canyon walls. Part of the Colorado...
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