| Image |
Title |
Description |
Date |
 |
[Close-up of trimming jumbo]Close-up, showing details of trimming jumbo used in scaling walls of diversion tunnels and removing projecting rock. |
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.
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1932-04-12
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 |
[Construction bridges across the Colorado River]With the approach of the annual spring rise in the river, the temporary truck bridge shown on the right has been abandoned. |
This is a view of a truck loaded with equipment driving across a bridge spanning the Colorado River at Hoover Dam site. Construction workers and equipment are shown on the bank of the river. At the right is an abandoned temporary truck bridge.
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1932-04-12
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 |
Sedimentation tank at Hoover Dam for Boulder City water supply. |
Shows sedimentation tank on the Colorado River at Hoover Dam that supplies the water for Boulder City.
|
1932?
|
 |
Lewis Construction Company drilling railroad tunnels of U.S. Construction Railroad to Hoover Dam. |
Construction workers using construction equipment to drill railroad tunnels.
|
1931
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 |
[Hoover Dam construction site, looking upstream.]Boulder Dam, looking upstream. |
This is a view of the wooden concrete forms used in the construction of Hoover Dam, looking upstream. Buildings and vehicles are visible. The photo was taken from high above the site.
|
1933-08-15
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 |
[Six Companies' power shovel dumping dirt in dump truck in diversion tunnel at Hoover Dam site] |
Construction workers are operating a power shovel, dumping dirt into a dump truck in a diversion tunnel at Hoover Dam. This is in the early phase of dam construction.
|
1931-12-08
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 |
[Hoover Dam site, looking upstream]Boulder damsite [sic] , looking upstream |
Vehicles, men, and construction equipment are visible. This view was taken in the early stages of the construction of Hoover Dam in the bottom of Black Canyon.
|
1933-06-03
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 |
[Crane transporting mixers in diversion tunnel at Hoover Dam site]Gantry crane transporting 4-cubic-yard Rex motor mixers in pouring tunnel lining. |
Photo shows a crane transporting cement mixers pouring the concrete lining in a diversion tunnel for Hoover Dam. Workers and equipment are visible in the interior of the tunnel.
|
1932-03-23
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 |
[Hoover Dam site, looking downstream]Boulder Damsite [sic], looking downstream. |
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
|
 |
[First concrete in Hoover Dam]First concrete in Boulder Dam. |
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
|
 |
[Hoover Dam, looking upstream]Boulder Dam, looking upstream. |
View from high above the canyon of the early stages of building the wooden forms for pouring the concrete in the construction of Hoover Dam in Black Canyon. Vehicles and other equipment can be seen as well as hoisting equipment positioned high on the canyon walls.
|
1933-06-27
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 |
[Hoover Dam, looking downstream]Boulder Dam, looking downstream. |
View of the construction of the foundations of Hoover Dam on the floor of Black Canyon. Various pieces of machinery can be seen as well as a construction building. The view is taken from high above but several construction workers are also visible.
|
1933-06-21
|
 |
[Hoover Dam construction, looking upstream]Boulder Dam, looking upstream. |
This photo shows the construction of the foundation of Hoover Dam on the floor of Black Canyon. Trucks, construction equipment, and cranes can be seen as well as several construction buildings. Photo taken from high above the canyon.
|
1933-07-22
|
 |
[Putting in the ceiling on the Nevada side of the no. 2 diversion tunnel]Nevada. Diversion Tunnel No. 2 on Nevada side. Putting in ceiling. |
Interior view of construction on the Nevada side of the no. 2 diversion tunnel. The tunnel walls are illuminated by electric lights. A truck and workers are seen in the middle of the tunnel floor.
|
1931?-1932?
|
 |
[Putting in the ceiling on the Nevada side of the no. 2 diversion tunnel]Nevada. Diversion Tunnel No. 2 on Nevada side. Putting in the ceiling. |
Interior view of construction on the Nevada side of the no. 2 diversion tunnel. Scaffolding rigged with electric lights is standing on the middle of the tunnel floor.
|
1931?-1932?
|
 |
[No. 1 and no. 2 tunnels]Nevada. No. 1 and No.2 tunnels. |
View of the mouths of diversion tunnels no. 1 and no. 2. A steel bridge crosses the Colorado River over Black Canyon.
|
1931?-1932?
|
 |
[Sidewall concreting inside diversion tunnel no. 4]Nevada. Diversion Tunnel No. 4, sidewall concreting. Boulder Dam. |
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.
|
1931?-1932?
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 |
[Sidewall concreting in diversion tunnel no. 4 showing workers]Nevada. Diversion Tunnel No. 4, sidewall concreting. Boulder Dam. |
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.
|
1931?-1932?
|
 |
[Penstock tunnel, Hoover Dam]Nevada. Construction. Boulder Dam. Penstock Tunnel. |
Aerial view of the Hoover Dam construction site on the Colorado River in Black Canyon. Cables are suspended across the canyon and a dirt road runs along the canyon floor. Early construction on a penstock tunnel can be seen.
|
1931?-1932?
|
 |
[Penstock tunnel piping]Nevada. Thirty foot penstock tunnel piping |
Two construction workers are seen standing in front of a piece of thirty foot diameter penstock tunnel piping, which is loaded on a wheeled platform.
|
1931?-1932?
|
 |
[Concrete form construction work]Nevada. Boulder Dam. Form construction work. |
View of construction workers buidling wooden forms for concrete pouring on Hoover Dam. The concrete dam wall is partially finished, and framework surrounds the beginning construction of the intake towers.
|
1933?-1934?
|
 |
[Concrete pouring forms on the Hoover Dam construction site seen from downstream]Nevada. Boulder Dam from the downstream side. |
Aerial view of multiple concrete pouring forms on Hoover Dam, seen from downstream on the Colorado River in Black Canyon. Cables, pulleys and catwalks are suspended over the river. Some construction equipment can been seen on the mountains.
|
1933?-1934?
|
 |
[Concrete pouring forms and construction on the intake towers at Hoover Dam]Nevada. Boulder Dam under construction. |
View of multiple concrete pouring forms and framework for the intake towers on Hoover Dam. Construction workers, equipment, roads and structures can be seen in Black Canyon, and the Colorado River can be seen in the distance.
|
1933?-1934?
|
 |
[Union Pacific Streamline train at the dam site]Nevada. Boulder Dam. Union Pacific Streamline train at the damsite. |
Construction workers stand outside a Union Pacific Streamline train at the dam site. Workers continue work on pouring concrete into forms on the top of the dam wall. Scaffolding supports workers working on the face of the dam wall. A section of temporary stairs is seen attached to the mountain...
|
1934?
|
 |
[Union Pacific Streamline train at the dam site]Nevada. Boulder Dam. Union Pacific Streamline train at the damsite. |
A Union Pacific Streamline train is seen at the dam site near the dam wall. Sections of temporary stairways are seen attached to the mountain side. Construction on one of the intake towers is also seen.
|
1934?
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