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226 - 250 of 1628 Items << < 5 6 7 8 9 10 11 12 13 14 > >>
226 - 250 of 1628 Items << < 5 6 7 8 9 10 11 12 13 14 > >>
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Shows the Nevada spillway and the face of the dam in the background. Cars are visible on the road across the top of the dam. Some of the intake towers are also visible. Construction equipment, buildings, and roads are shown. The Colorado River...
1935-07-26
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View looking down from the top of Hoover Dam during construction. It shows the power houes, the valve houses and the lower cofferdam. Cars and trucks, buildings and structures, roads, and various equipment can be seen. A cable spans the canyon...
1935-02-25
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Shows the Arizona valve house being built. Construction equipment, buildings, cables and high scaling equipment are visible on the side of the canyon.
1935-04-25
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View of the Nevada intake towers during construction. The photo was taken from the Arizona side of the canyon and shows suspended temporary bridges, a railroad track and cars on the side of the canyon, a trestle, and various types of...
1934-10-25
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Construction inside the upper no. 3 plug showing framework, pipe sections and a pumpcrete used for pumping concrete.
1934-08-25
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Close-up of construction on the Arizona intake towers.
1934-07-24
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Shows the construction of the Nevada intake towers, taken from the Arizona side of the canyon. Trestles, cables, hosting equipment and temprary bridges are visible. Below the towers there is a temporary railroad.
1934-05-29
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This aerial photo shows various parts of the dam under construction. Cableways, an overhead tram, various buildings and structures, railroad tracks, trestles, and concrete forms are visible. Also shows the Arizona spillway, Arizona intake...
1934-04-17
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View of construction on the upstream face of Hoover Dam. Construction equipment, scaffolding and concrete pouring forms are seen on and around the dam wall. Temporary stairs are seen attached to the wall of Black Canyon on the upper right. An...
1934-01-24
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A close-up view of Hoover Dam construction. There is a railroad running along the canyon, concrete forms, a truck, and a building. Temporary stairways have been built into the canyon walls.
1933-11-30
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View of interior of diversion tunnel No. 3 during the construction of Hoover Dam.
1933-10-30
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Shows concreting equipment inside No. 1 spillway tunnel during the construction of Hoover Dam.
1933-10-07
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View of a power house on the Nevada side taken during the construction of Hoover Dam. Shows power penstock tunnels, scaffolding, construction equipment and trucks.
1934-07-20
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View of the Hoover Dam construction site, showing partial completion of the dam wall and early work on one of the intake towers. Scaffolding is seen on the cliff face, and a bucket of concrete is suspended by a crane over the dam. People can be...
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View of the construction of Hoover Dam, looking upstream. Shows concrete forms, various construction buildings, and high scaling equipment. Taken from high above, the Colorado River can be seen above the dam site.
1933-08-07
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View of construction on Hoover Dam from downstream on the Colorado River. Scaffolding and concrete pouring forms are seen on the dam wall and in the riverbed. Temporary buildings are seen in the foreground.
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Construction inside diversion tunnel no. 4. Steel beams rigged with electric lights frame the tunnel walls and ceiling. A construction truck and workers are seen on the tunnel floor. Two workers are in the foreground.
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Shows the concrete pouring forms for the base of the dam. The upper cofferdam is in the background. Cableways, buildings, construction workers and trucks are visible. A railroad track runs along the side of the wall of Black Canyon.
1933-09-14
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Shows the huge penstock pipes at the Babcock & Wilcox Plant near the site of Hoover Dam construction. A man is standing next to one of the pipes. A train engine is on the railroad tracks, inside one of the pipes.
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Shows the giant penstocks used in the tunnels at Hoover Dam. One is on a railroad flatcar, the other is being hoisted from the railraod car. There is a construction worker standing on top of the penstock in the air.
1934-04-27
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Shows the Colorado River in Black Canyon at the beginning of construction on the dam. Some cables are suspended across the river, some construction workers are on the roads next to the river, and a power shovel is visible.
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View of the drilling jumbo working in one of the diversion tunnels during the construction of Hoover Dam.
1932-01-28
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View of the Hoover Dam construction site in Black Canyon from downstream. Framework and concrete pouring forms are visible on the Nevada power house on the left, the Arizona power house on the right and the central portion of the power house at...
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Close-up view of the concrete construction work on the crest of the dam. Partially completed intake tower is visible at upper left. Arizona spillway is also visible.
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Color transparency of the downstream face of the dam, showing the power house. Transmission tower for hyroelectric power and a cableway are visible.
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