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Railroad cars and siding in the vicinity of Hoover Dam. They were used to transport construction materials to the dam site.

Shows transport trucks and construction workers in Black Canyon next to railroad tracks.

Shows construction buildings, roads, and trucks in the mountains near the Hoover Dam site.

Shows a car and a barge on the Colorado River near the Hoover Dam site.

"Towards canyon, top of shed is to be entrance to Nevada spillway. Water will be up to about the top of shed". (hand-written inscription) Shows site of the future entrance to the Nevada Spillway in Black Canyon. There is a truck parked at the site.

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.

View looking down at the Colorado River in Black Canyon, the future site of Hoover Dam. Roads and buildings can be seen on the banks above the river and some construction equipment is visible.

Shows railroad cars transporting materials for the construction of Hoover Dam. A man is standing on one of the railroad cars.

Photo taken from high above the Colorado River, showing the river and surrounding mountains. This was taken before the constuction of Hoover Dam in Black Canyon.

"Down-stream from Observation Point -- note tunnel in center of picture. Trucks hauling muck from Nevada portals must go through this tunnel to dumping grounds one mile away. [150 feet to river straight down]"-- [hand-written inscription on back...

"Down stream from Observation Point. Buildings on the right side are water sedimentation plants. Water treated for Boulder City. Left side is Arizona side of River." [hand-written inscription on back of photo] This photo was taken high above...

View of Hoover Dam construction site, looking straight down into Black Canyon. "Straight down into canyon. I leaned over the cliff to get this one. Taken from in front of observation point." -- [hand-written inscription on the back of the...

View of The Colorado River and the construction roads on the sides of the canyons and mountains. Taken from very high above. Some buildings and structures are also visible.

"Downstream from upper portals. Note the two portals on Arizona side of river and new suspension bridge under construction."[hand-written inscription on the back of the photo] Cables are visible overhead and a truck is also in the picture.

"Upstream from observation point. Note car going down road." [hand-written inscription on back of photo] Taken from high above the Colorado River, this view shows roads, bridges, buildings and structures, and a car on the side road.

"Looking int.[o] canyon from observation point -- up river bridge is for trucks hauling muck out of upper portals." [hand-written inscription on back of photo] Taken from an observation point high above Black Canyon, this view shows bridges...

"Upstream toward lower portals." [hand-written inscription on back of photo] This view shows the Colorado River in Black Canyon during the early stages of the construction of Hoover Dam. A suspension bridge across the river can be seen as well...

View of the Colorado River before the water was diverted to build Hoover Dam. Suspension bridges across the river are visible and various buildings can be seen on the lower walls of Black Canyon.

Crest of Hoover Dam looking from the the Arizona side. A road is in the forground of the photo. The intake towers are prominent in the photo. The reservoir (Lake Mead) is more than two-thirds filled with water. Automobiles are seen on the road...

View of the top of the dam from the Arizona side. Intake towers are visible on the Arizona and on the Nevada side. The reservoir (Lake Mead)is more than two-thirds full of water. Automobiles are seen on the road across the top of the dam. A road...

View of the top of the dam from the Arizona side. There are automobiles on the road across the top of the dam. Intake towers are in the forground and also in the background. A sailboat is seen sailing on the reservoir. The water in the reservoir...

View of the crest of Hoover Dam from the Arizona side. The intake towers stand in the middle of the photo. The spillway on the Arizona side is in the foreground. The Nevada spillway is in the background. The reservoir is over two-thirds full....

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
Shows a huge penstock pipe on a railroad flatcar. A man is posed standing inside the pipe. "13' diameter penstock pipe". (hand-written inscription on back of photo)

Shows some of the huge penstock pipes at the Babcock and Wilcox Plant. These pipes were used in the construction of Hoover Dam. A man is standing inside one of the pipes.

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