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Title |
Description |
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151 |
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Concrete lining inside diversion tunnel no. 2 |
View of the interior of diversion tunnel no. 2, showing the completed invert and side wall sections of concrete lining. The tunnel is illuminated by electric lights. On the tunnel floor, construction workers stand by a truck which is... |
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152 |
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Concrete side wall lining in diversion tunnel no. 3 |
View of the interior of diversion tunnel no. 3, showing completed side wall sections of concrete lining. The tunnel is illuminated by electric lights. Concrete pouring forms and a gantry crane are seen in the rear of the tunnel. |
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153 |
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Side-wall jumbo inside diversion tunnel |
View of the interior of a diversion tunnel showing the side-wall jumbo used for placing of the concrete tunnel lining. The tunnel and jumbo are illuminated by electric lights. A construction worker stands in the foreground. A truck... |
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154 |
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Construction of steel forms for the lining of the diversion tunnels |
View of outdoor construction of steel forms to be used for lining the arch sections of the diversion tunnels. Construction workers are seen, one of them operating a bulldozer. A power shovel can be seen behind the steel... |
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155 |
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Steel form for diversion tunnel lining being hoisted into Black Canyon |
A completed section of steel form to be used for the lining of the diversion tunnels is hoisted by a cable into Black Canyon while construction workers supervise. |
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156 |
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Steel form for diversion tunnel lining being hoisted over the Colorado River |
A completed section of steel form to be used for lining the diversion tunnels is seen being hoisted on a cableway over the Colorado River. A construction worker can be seen standing on top of the form. |
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157 |
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Cape Horn on the Colorado River showing cliff buildings |
Shows the Six Companies construction camp at Cape Horn on the Colorado River. Shows several buildings on the bank above the river. |
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158 |
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Dam workers return to Boulder City after shift |
Shows a motor lorry (bus)parked in Boulder City; dam workers are exiting the lorry as they return from the day shift on Hoover Dam. Portions of buildings are visible. |
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159 |
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View of Colorado River |
This shows the Colorado River from a lookout point above. Two people are faintly visible and as well as part of the road . There are mountains in the background which are covered with water today. |
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160 |
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Truck on road to Hoover Dam site |
Shows a truck on the road to the Hoover Dam site. There are mountains visible. |
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161 |
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Black Canyon during dam construction |
Shows construction equipment and buildings in Black Canyon. There is a platform built on the side of the canyon and a cable line overhead transporting trams. |
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162 |
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Bucket skips being filled with "muck" from the deep inner gorge of Black Canyon. |
Shows construction equipment and workers in the gorge of Black Canyon. Bucket skips are being loaded with muck to be transported out of the canyon. Also shows a power shovel and high scalers. |
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163 |
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Diversion tunnels during Hoover Dam construction |
Photo shows the Arizona diversion tunnels during the construction of Hoover Dam. Two men, railroad trucks, a temporary bridge, some temporary structures and a cable over the canyon are also shown. |
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164 |
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Hoover Dam area and Colorado River |
An overview of the Hoover Dam area showing mountains, the Colorado River, and Fortification Hill. |
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165 |
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"Crows Nest" overlooking Black Canyon and the Colorado |
Two men, possibly surveyors, standing on the edge of the canyon at an overlook known as "Crows Nest", overlooking the Hoover Dam site in Black Canyon. The Colorado River is visible below. Photo is actually a postcard. |
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166 |
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Construction workers at Hoover Dam |
Two construction workers at the Hoover Dam site working with heavy machinery. |
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167 |
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Workers laying railroad track near Boulder Canyon |
Photo shows workers and machinery involved in laying railroad track near Boulder Canyon. There are several structures in the picture and mountains in the background. |
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168 |
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Construction crews in Boulder Canyon. |
Photo shows a power shovel and dump truck doing construction work in Black Canyon (not Boulder Canyon). |
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169 |
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One of the construction sites in Boulder Canyon. |
Shows construction equipment, a boat, and various structures. Location is a rocky outcrop in Black Canyon (not Boulder Canyon) on the bank of the Colorado River. |
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170 |
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Blasting at Hoover Dam construction site. |
Shows blasting at the Hoover Dam construction site. A road along the Colorado River and a building on the opposite shore can be seen as well as mountains in the background. |
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171 |
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Highway near Hoover Dam |
Shows a highway through the mountains near Hoover Dam. |
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172 |
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Diversion tunnels under construction - Hoover Dam |
Exterior view of diversion tunnels at the Hoover Dam site during construction. Photo shows the Colorado River and scaffolding around the partially constructed tunnels. |
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173 |
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Construction scene at Hoover Dam site |
Shows construction crew and equipment at the Hoover Dam site. Power lines are also in the scene. |
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174 |
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Construction site at Hoover Dam |
Photo shows various buildings and structures, railroad tracks, trucks and power lines. There is blasting taking place in the background between the mountains. |
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175 |
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Somewhere near present-day Hoover Dam |
Shows mountains and sand, somewhere in the vicinity of present-day Hoover Dam. |
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176 |
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Construction work at Hoover Dam site |
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. |
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177 |
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High scalers preparing anchorages in Black Canyon |
Three high scalers prepare rope anchorages for future scaling work one thousand feet above the Colorado River in Black Canyon. |
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178 |
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Construction workers with electric light reflectors standing by a truck in Black Canyon |
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. |
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179 |
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Future Hoover Dam reservoir area seen from Black Canyon |
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.... |
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180 |
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Blasting on the Arizona side of the cableway bench excavation |
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... |
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181 |
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Rock blasting in Black Canyon |
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. |
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182 |
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Close-up of rock blasting in Black Canyon, taken from the Black Canyon Highway |
Close-up of enormous smoke and dust clouds filling Black Canyon during rock blasting for construction of Hoover Dam. |
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183 |
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Rock blasting on the Arizona side of Black Canyon |
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. |
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184 |
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Detail of a sidewall jumbo inside diversion 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... |
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185 |
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Detail of side-wall jumbo inside diversion tunnel |
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.... |
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186 |
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Section of a concrete-pouring jumbo standing outside of a diversion tunnel |
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. |
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187 |
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Dragline loading gravel into railroad side dump cars |
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. |
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188 |
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Railroad freight cars carrying gravel across a trestle bridge on the Colorado River |
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. |
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189 |
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Man standing on trestle bridge on the Colorado River pointing at anchoring cables |
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... |
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190 |
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Locomotives at the gravel plant yard |
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. |
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191 |
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High scalers on the Nevada side of Black Canyon |
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. |
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192 |
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High scalers on the Nevada side of Black Canyon above the Colorado River |
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. |
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193 |
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Close-up of construction workers rigging a cableway over the Colorado River |
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. |
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194 |
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Construction workers on cableway transport over the Colorado River |
Construction workers are seen being transported over the Colorado River in Black Canyon via a "skip," or platform, attached to overhead cableways. |
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195 |
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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. |
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196 |
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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... |
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197 |
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Closeup of Upper Portals of Diversion Tunnels No. 3 and 4, showing flow in Diversion... |
The Colorado River begins its flow into diversion tunnel no. 4. The portals to both diversion tunnels no. 3 and 4 are seen. |
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198 |
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Dump trucks on temporary dike in front of portals of diversion tunnels no. 3 and... |
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... |
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199 |
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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. |
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200 |
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Aerial view of the Colorado River showing diversion of the river into diversion tunnels no.... |
Aerial view of the Colorado River in Black Canyon showing the diversion of the river into diversion tunnels no. 3 and 4. |