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26 - 50 of 1628 Items << < 1 2 3 4 5 6 7 8 9 10 > >>
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Excavating for block 40 behind section "E" of west cofferdam. East cofferdam across the river.
1935-12-04
2024-05-07 |
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Looking toward west side of block 40. Drainage and grouting gallery at elevation 880, and the 900 elevation galleries, bents for "1024" trestle to the left, and tie-in to cell in cluster "D" of west cofferdam.
1936-08-28
2024-05-07 |
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Block 11-A showing section of 900 elevation gallery form, and in lower right a portion of grouting and drainage gallery. Upright pipes in block are 5-inch porous drain pipes.
1936-07-13
2024-05-07 |
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Exposed bedrock in the center section, looking west toward block 40. Derrick equipment mounted on the steel cell on the left, and other equipment to be mounted on the timber crib located on the rock, are to be used for cleanup of rock, and for...
1937-04-29
2024-05-07 |
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Third Volume, Twelfth issue, of the Mason-Walsh-Atkinson-Kier CO. builders of Coulee Dam Safety Newsletter. Created by the Safety Department and issued to the residents of Mason City and contract workers at Grand Coulee Dam.
2024-05-07
2024-05-07 |
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Third Volume, Eleventh issue, of the Mason-Walsh-Atkinson-Kier CO. builders of Coulee Dam Safety Newsletter. Created by the Safety Department and issued to the residents of Mason City and contract workers at Grand Coulee Dam.
2024-05-07
2024-05-07 |
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Shows a power shovel dumping concrete into a dump truck inside a diversion tunnel during the construction of Hoover Dam. Construction workers are visible at work.
1933-10-30
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Shows the construction of Hoover Dam. One of the portals of the diversion tunnels is visible. Dynamite blasting is taking place in the canyon and trucks and various construction buildings are visible on the cofferdam. Also shows some...
1933-05-10
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View of steel rails on the roof of the Nevada valve house, ready for pouring concrete slab. Two construction workers are seen in the distance near the canyon wall.
1935-09-27
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Shows construction workers and equipment on the top of Hoover Dam.. They are building the roadway across the dam. Trams on cableways and intake towers can be seen in the background. A bucket is pouring the roadway on "R" block at elevation 1232.
1935-02-25
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A telephoto view of the Arizona spillway during the construction of Hoover Dam. Shows the bridge and control house. Trucks, various buildings, and some construcion workers are visible. Cables are overhead and construction roads snake up the...
1935-03-26
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View of construction on the Arizona power house. Wood and steel framework surround the site. Part of the dam face is seen in the upper left. Construction workers, equipment and temporary buildings are seen in the cofferdam between the Nevada and...
1934-06-21
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View from the Arizona side of the Hoover Dam construction site of work on the four intake towers. Steel framework rises from the top of each intake tower. Part of the Nevada spillway is seen in the upper right. Construction workers can be seen at...
1934-09-27
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Aerial view looking over the top of construction on the face of Hoover Dam. Construction workers can be seen amid concrete pouring forms and other construction equipment. A railroad bench for transportation of concrete can be seen in the lower...
1934-02-20
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Construction workers are seen above concrete pouring forms and scaffolding during construction of the Arizona spillway in Hoover Dam. An electric dragline can be partially seen in the upper left.
1934-02-20
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Aerial view of the Hoover Dam construction site. Construction workers are seen amid concrete pouring forms and other construction equipment. Temporary stairs are attached to the wall of Black Canyon, and a railroad bench used for transportation of...
1933-12-27
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Shows construction crew and equipment at the Hoover Dam site. Power lines are also in the scene.
2024-05-07
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Construction workers are pouring the first concrete for the foundation of Hoover Dam in the bottom of Black Canyon. Large bucket suspended from a crane is visible as well as the concrete frames for the pour.
1933-06-06
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Shows construction workers on the trimming jumbo which was used to scale the walls of the diversion tunnels and remove projecting rock. The tunnel is at the Hoover Dam construction site.
1932-04-12
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Shows workers using drills on the floor of Black Canyon at the Hoover Dam construction site.
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View of construction in Black Canyon at the Hoover Dam site. Construction workers are standing by the railroad tracks looking at a dynamite blast that is taking place in the distance. The Colorado River is visible as are various pieces of...
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View from the downstream cofferdam of construction on the Arizona power house. Concrete pouring forms and steel framework stand on top of the power house foundation. The dam face and wall of Black Canyon can be seen in the background. Temporary...
1935-01-28
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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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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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