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326 - 350 of 1628 Items << < 9 10 11 12 13 14 15 16 17 18 > >>
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Shows a box car being lowered by hoist at Hoover Dam during construction. The power houses and intake towers are visible as well as the upstream face of the dam. A cableway stretches across the canyon, supporting the hoist.
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Shows construction taking place on the bridge of the Arizona spillway. Construction materials, construction equipment such as a power shovel, a temporary building and stairways, and the ropes for high scaling are visible.
1935-01-08
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Shows the upstream face of the dam, the intake towers, and construction equipment. There is a little water in the reservoir (Lake Mead).
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Close-up view of a spillway at Hoover Dam during construction. Hoisting machinery is visible on the mountain above.
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Construction on the Nevada power house. Concrete pouring forms are seen on top of the structure's foundation. A portion of the dam face is seen in the background. Temporary buildings, motor vehicles, electric draglines and construction equipment...
1935-03-26
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Close-up of construction on the Nevada power house. Concrete pouring forms and other construction equipment are seen around the structure. An electric dragline is seen on top of the pouring forms.
1935-05-27
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Overhead view from a cableway of concrete pouring forms during construction of the Arizona valve house. A power shovel and several trucks can be seen in the cofferdam at the right.
1935-01-16
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View from canyon rim looking upstream through the Arizona spillway. Scaffolding is in the foreground in preparation of building the bridge over the spillway. To the left are the spillway gates with a crane extending behind.
1934-05-25
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Shows the Nevada valve house during construction. It is built into the side of the canyon wall. Below it is the refrigeration plant. Cables, a truck, buildings, and scaffolding can be seen.
1935-07-26
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Looking across Hoover Dam from the Arizona side, showing elevator and utility towers under construction. Buildings and structures are visible on the side of the canyon.
1935-01-02
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Shows the concrete pipe line from the pumpcrete gun to the upstream plug in diversion tunnel no. 2. Some construction workers are visible.
1934-10-30
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Shows Hoover Dam during construction, looking downstream. The intake towers are nearly finished. Shows dome on one of the intake towers. Roads, buildings and structures, railroad trestles and cableways are visible.
1935-02-25
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View of the power house and valve houses from the top of the dam. Various buildings and structures can be seen as well as concrete forms. There are construction roads below the dam and a temporary bridge spans the canyon. Some trucks are also...
1935-07-25
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View of construction on the Nevada intake towers. Steel framework protrudes from the tops of the towers. Concrete pouring buckets can be seen on the rarilroad bench below the towers. Derrick cranes can be seen in the canyon walls above and beside...
1934-06-21
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View of construction on the Arizona power house seen from the Nevada valve house bench. Framework rises from the top of the power house. Temporary buildings, construction equipment and vehicles can be seen in the cofferdam in front of the power...
1934-09-27
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Aerial view of the Hoover Dam construction site taken from downstream on the Colorado River in Black Canyon. Construction on the Nevada and Arizona power houses is shown in the foreground in the cofferdam. Concrete pouring forms cover the top of...
1934-06-16
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View of construction on the Arizona power house. Framework and concrete pouring forms cover the powerhouse site. The dam face is seen in the background. Construction workers and equipment, vehicles and temporary buildings are seen in the...
1934-07-24
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View of the intake towers and the spillway on the Arizona side of the dam during construction. Hoisting equipment, concrete forms, and high scaling equipment can be seen.
1934-03-24
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View of construction on the foundations of the Arizona intake towers and on the Arizona spillway in Black Canyon. The partially finished face of Hoover Dam is seen in the lower right.
1934-02-20
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Close-up of the concrete pouring forms for the Arizona power house retaining wall. Some concrete has already been poured. Temporary buildings, construction workers and vehicles can be seen in the background at the foot of the Hoover Dam face.
1934-03-14
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View of construction on the upstream face of Hoover Dam in Black Canyon. Scaffolding, concrete pouring forms and other construction equipment are seen around the site. Temporary buildings and trucks are seen in the foreground.
1933-12-27
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Photo shows the site of the construction of the intake towers on the Nevada side of the dam. High scaling equipment, a crane, scaffolding, construction buildings and equipment are visible.
1933-10-31
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Freight cars carrying buckets of concrete are seen on a temporary railway built onto the canyon wall at the Hoover Dam construction site. Concrete setting in pouring forms in the dam site and construction workers are seen below.
1933-08-12
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Panoramic view of construction in the upper cofferdam of Hoover Dam in Black Canyon. A dragline is seen in the middle of the canyon floor. Several trucks, construction equipment and construction workers are also seen in the canyon.
1932-11-16
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Construction site of Hoover Dam in Black Canyon, looking upstream. Above the site is the Colorado River. Shows concrete forms, a train winding along the wall of the canyon, various construction buildings, hoisting machinery, and a cable...
1933-09-15
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