| Image |
Title |
Description |
Date |
 |
[Somewhere near present-day Hoover Dam] |
Shows mountains and sand, somewhere in the vicinity of present-day Hoover Dam.
|
1931
|
 |
[Construction work at Hoover Dam site]Construction work at Hoover Dam. |
Shows several buildings and structures on a rocky hillside on the bank of the Colorado River. They were involved in the construction of Hoover Dam.
|
1931
|
 |
[High scalers preparing anchorages in Black Canyon]High scalers perched on a bench 1,000 feet above the river prepare anchorages from which workmen will be suspended by ropes in scaling the canyon walls for the penstock tunnel adits. |
Three high scalers prepare rope anchorages for future scaling work one thousand feet above the Colorado River in Black Canyon.
|
1932-08-22
|
 |
[Construction workers with electric light reflectors standing by a truck in Black Canyon]Visitors to the project are struck with the multiplicity of dish pans used as reflectors, which are scattered all over the project where night work is carried on. |
Several construction workers in Black Canyon prepare reflectors for electric lighting from metal dishpans. Some of the workers stand in a truck bed and others stand beside the truck.
|
1932-08-15
|
 |
[Future Hoover Dam reservoir area seen from Black Canyon]Looking across the reservoir area, which will be submerged when Hoover Dam is completed. |
View from Black Canyon of the area which, when submerged, will become the Hoover Dam reservoir. In the foreground, a car is seen traveling a dirt road, and a lone construction worker views the scene from atop the rocks. The hills in the foreground of the picture will form a small island in the...
|
1932-08-15
|
 |
[Blasting on the Arizona side of the cableway bench excavation]A blast on the cableway bench excavation, on the Arizona side above the damsite. |
View from the lower portal of railroad tunnel no. 1 of rock blasting on the Arizona side of Black Canyon. Power poles and power lines are seen lining a dirt road leading to the blasting site. Other cables hang across the canyon. A truck is seen in the foreground.
|
1932-08-24
|
 |
[Rock blasting in Black Canyon]Huge billows of rock and dust pour over the canyon rim and descend to the river below. |
View from a dirt road of rock blasting in Black Canyon. Electric power poles and lines run along the road and other cables are suspended over the canyon. A truck is seen in the foreground.
|
1932-08-24
|
 |
[Close-up of rock blasting in Black Canyon, taken from the Black Canyon Highway]A picture of a blast at the same place shown above, taken from directly opposite, on the Black Canyon Highway. |
Close-up of enormous smoke and dust clouds filling Black Canyon during rock blasting for construction of Hoover Dam.
|
1932-08-16
|
 |
[Rock blasting on the Arizona side of Black Canyon]Blast on the Arizona intake tower excavation, which has filled the canyon with smoke and dust. |
View of Black Canyon and the Colorado River; smoke and dust clouds fill the canyon at the site of rock blasting for the Arizona intake towers. A steel suspension bridge is seen crossing the river upstream.
|
1932-08-16
|
 |
[Detail of a sidewall jumbo inside diversion tunnel no. 3]This view and No. 1131 show the forms set for the first sidewall pour in the upper portal of tunnel no. 3 |
Close-up of a section of a side-wall jumbo inside a diversion tunnel set for concrete pouring of the tunnel's side walls. The form is 80 feet long and consists of four 20-foot sections bolted together. Measurements are marked on the edges of the form. A construction worker can be seen in...
|
1932-04-29
|
 |
[Detail of side-wall jumbo inside diversion tunnel]Detail picture of the side-wall used in placing the 3 ft. thick lining in the diversion tunnels. |
Detail of a side-wall jumbo used for pouring concrete lining inside a diversion tunnel. The side wings of the jumbo are jacked into place, and concrete is poured through ports by means of a traveling crane and 2 yd. buckets.
|
1932-04-28
|
 |
[Section of a concrete-pouring jumbo standing outside of a diversion tunnel]The first f a cojumboe-pour for pouring concrete in the top or arch section of the tunnels was erected on the "beach" in front of tunnel no. 2 and transported across the river in sections by cableway. |
A completed section of a form, or "jumbo," for pouring of concrete to create the diversion tunnel arches stands upon trestles in Black Canyon. Construction workers are seen working on the form.
|
05/20/1932
|
 |
[Dragline loading gravel into railroad side dump cars]Marion type 125 electric dragline with 5 cu. yd. bucket loading into 30 cu. yd. side dump cars at the gravel pit. |
View of an electric dragline loading railway side dump cars in the gravel pit in Black Canyon. Mikado type locomotives pull 10-car trains, 3 trains of this type [were] in operation.
|
1932-05-03
|
 |
[Railroad freight cars carrying gravel across a trestle bridge on the Colorado River]Ten car train of gravel crossing the 1100 ft. trestle bridge and bound for the screening plant. |
A locomotive pulls freight cars loaded with gravel across a trestle bridge on the Colorado River toward the screening plant. A round trip took slightly over two hours.
|
1932-05-03
|
 |
[Man standing on trestle bridge on the Colorado River pointing at anchoring cables]As a protection against high water, a "bridle" has been attached to the upstream face of the gravel pit bridge. |
A man stands on the trestle bridge near the gravel pit and points at the cables attached to the upstream face of the bridge used to anchor the bridge in case of high water. Three-inch cables [were] anchored to concrete "dead-men" and horizontal stays [were] attached to bents on the...
|
1932-05-15
|
 |
[Locomotives at the gravel plant yard]Locomotive equipment of Six Companies Inc. on the yard at the gravel plant. |
Four standing locomotives are seen on the railway tracks in the gravel plant yard. A freight car can be seen behind one of the locomotives.
|
1932-05-15
|
 |
[High scalers on the Nevada side of Black Canyon]Scaling down the canyon wall, in the excavation for the intake tower on the Nevada side. |
High scalers work on the canyon wall on the Nevada side of Black Canyon, excavating for construction of an intake tower. Bridges can be seen in the distance crossing the Colorado River.
|
1932-04-01
|
 |
[High scalers on the Nevada side of Black Canyon above the Colorado River]Close-up of No. 1074 to the left. |
Close-up of high scalers working on the Nevada side of Black Canyon, 700 feet above the Colorado River. Two bridges are seen crossing the river below.
|
1932-04-01
|
 |
[Close-up of construction workers rigging a cableway over the Colorado River]Temporary cable-way spanning the Colorado River, near Look Out Point [sic], providing access to the Arizona spillway operations shown in the background. |
Two construction workers are seen rigging a "skip," or platform, to a cableway above the Colorado River in Black Canyon. The skip will be used to cross the river above the canyon.
|
1932-04-01
|
 |
[Construction workers on cableway transport over the Colorado River]Skipload of workmen being transported across the Colorado River from the Arizona side. |
Construction workers are seen being transported over the Colorado River in Black Canyon via a "skip," or platform, attached to overhead cableways.
|
1932-04-01
|
 |
Closeup of Upper Portal of Diversion Tunnels No. 3 and 4, during preparations for blast. |
A close-up of the portals to diversion tunnels no. 3 and 4 on the Colorado River. Construction workers prepare equipment for a blast. A truck loaded with lumber can be seen between the tunnels.
|
1932-11-13
|
 |
Dumping materials at temporary pile bridge to complete diversion of the Colorado River. |
Dump trucks dump materials into the Colorado River to from a temporary bridge in order to divert the river into the diversion tunnels. Several construction workers carry out and supervise the operation and a large group watches from the river bank, standing in front of a temporary building.
|
1932-11-13
|
 |
Closeup of Upper Portals of Diversion Tunnels No. 3 and 4, showing flow in Diversion Tunnel No. 4, shortly after blast. |
The Colorado River begins its flow into diversion tunnel no. 4. The portals to both diversion tunnels no. 3 and 4 are seen.
|
1932-11-13
|
 |
[Dump trucks on temporary dike in front of portals of diversion tunnels no. 3 and 4]Upper Portals of Diversion Tunnels Nos. 3 and 4, and temporary dyke [sic], after the diversion of the Colorado River was completed. |
View of the temporary dike created to divert the Colorado River into the diversion tunnels. Dump trucks and construction workers are seen on the temporary pile bridge and the portals of diversion tunnels no. 3 and 4 are seen in the canyon wall in the background.
|
1932-11-14
|
 |
Panoramic view of the Upper Cofferdam, looking downstream |
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
|
