Search for all of "equipment", all of "Construction Workers"

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Crews and equipment in Black Canyon at dam site A view of the Colorado River flowing through Black Canyon (not Boulder). In the foreground are air compressors and an open sided shed with a construction worker standing inside. There are tracks running along side of the shed following the...
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Men operating heavy equipment at Hoover Dam site. he photo shows two construction dump trucks sitting in front of heavy equipment. This machinery appears to have some sort of pulley apparatus with a bucket attached for hauling dirt or rocks from the construction site. There are two construction...
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Worker operating heavy equipment at Hoover Dam site. This shows a construction worker operating a construction tractor which is loading dirt and rocks into the scoop on the front of the tractor.
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Men operating heavy equipment at Hoover Dam site. There are two construction workers observing one worker operating construction equipment. The machinery appears to be digging a trench. There is a line of pipes standing vertically in the ground.
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Crew operating construction equipment at Hoover Dam site Construction workers appear to be near the top of a canyon as they observe a coworker operating a power shovel which is being used to move rocks and boulders.
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Hoover Dam construction equipment Handwritten inscription on back of photo: "16-rigger riding the hook on a cableway (one of nine that span Black Canyon). The highway approach to the dam from the Arizona side can be seen across the canyon."
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Lewis Construction Company drilling railroad tunnels of U.S. Construction Railroad to Hoover Dam. Construction workers using construction equipment to drill railroad tunnels.
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Six Companies' power shovel dumping dirt in dump truck in diversion tunnel at Hoover Dam... 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.
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Hoover Dam site, 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.
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Crane transporting mixers in diversion tunnel at Hoover Dam site 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.
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Hoover Dam site, 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.
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First concrete in Hoover 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.
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Hoover 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...
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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.
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Trash rack structure being installed in front of diversion tunnel no. 2 Close-up of construction workers installing the foundations of a trash rack in front of the portal of diversion tunnel no. 2. This is where the first pay concrete was poured.
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Construction near the upper portals of diversion tunnels no. 1 and no. 2 High scalers work on the cliff face above the unfinished portals of diversion tunnels no. 1 and no. 2. Construction equipment, trucks and workers are seen on the road in front of the tunnels. Rigging and ropes hang from...
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Workers and drilling jumbo inside diversion tunnel no. 4 Construction workers are seen working with a drilling jumbo inside diverson tunnel no. 4.
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Close-up of workers using a drilling jumbo inside a diversion tunnel Close-up of construction workers using a drilling jumbo to excavate the interior of one of the diversion tunnels. The tunnel is illuminated by floodlight.
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Construction worker in bulldozer in front of diversion tunnel portal A construction worker sits in a Caterpillar bulldozer in front of an unfinished diversion tunnel portal.
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Worker inside drill sharpening station A worker is seen inside a drill sharpening station using a drill sharpener. A hot forge is also seen inside the building in the foreground.
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Construction workers using a drilling jumbo inside a diversion tunnel Construction workers using a drilling jumbo to excavate one of the diversion tunnels.
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Electric shovel loading rocks into dump truck Close up of an electric power shovel loading rock and debris into a dump truck. A driver sits in the truck.
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Worker sitting in dump truck being loaded by power shovel Close up of a construction worker sitting in a Mack truck which is being loaded with debris by a power shovel.
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Dump truck unloading debris during construction of muck disposal road View of a dump truck unloading debris during construction of a roadway. One construction worker sits behind the wheel of the truck and two others stand by observing from the road.
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Invert concrete pouring forms inside diversion tunnel Interior of a diversion tunnel, showing invert concrete pouring forms. Some construction workers can be seen in the foreground. The tunnel is illuminated by electric lights.
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Gantry crane inside diversion tunnel no. 3 A gantry crane is seen inside a diversion tunnel during construction of Hoover Dam. A flat bed truck is seen on the tunnel floor in the foreground and construction workers stand by. The tunnel is illuminated by electric...
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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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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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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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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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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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Construction workers at Hoover Dam Two construction workers at the Hoover Dam site working with heavy machinery.
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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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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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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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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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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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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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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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Cut-off trench at upstream side of Hoover Dam. Construction workers and equipment are seen in a cut-off trench in the upstream side of the Hoover Dam construction site.
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Nevada spillway during construction of Hoover Dam Photo shows men working on the Nevada spillway weir. There are concrete forms, various buildings, construction equipment, and a truck in the scene.
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Men working on Hoover Dam. This photo shows two construction workers operating equipment used in the construction of Hoover Dam.
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Construction worker at Hoover Dam. A construction worker is operating a construction tractor with an attached trailer that is filled with boulders, rocks and dirt.
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Construction workers on cliffs in Boulder Canyon. Construction workers use ropes to pull themselves up and down the cliffs in Boulder Canyon. The workers use picks to dig trails on the mountainside.
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Floor of Black Canyon This shows a view looking down into Black (not Boulder) Canyon during early stages of construction of Hoover Dam. The Colorado River is in the process of being diverted and construction equipment and workers can be seen in the foreground.
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Black Canyon A view of the Colorado River flowing through Black (not Boulder) Canyon. On the right side of the canyon there is a road with two automobiles, some construction equipment, and a construction worker.
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Himix Concrete Plant at Hoover Dam site View of the Himix Concrete Plant at the Hoover Dam site. The structure is mutli-storied and built into the side of the canyon. There is a flatbed truck with a cement bucket on the back and cement mixers...
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Close-up of Hoover Dam concrete pouring construction taken from the Arizona side, looking downstream View from donwstream on the Arizona side of the Colorado River of concrete pouring construction on Hoover Dam. Construction workers are seen amid multiple concrete pouring forms and scaffolding. A suspended concrete pouring bucket is seen in the middle...
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Excavation for downstream plug, Diversion Tunnel No. 2. Interior of diversion tunnel no. 2, showing excavation work. Construction workers stand on and below scaffolding to reach the tunnel walls and ceiling. Trucks are seen on the tunnel floor. The site is illuminated by electric lighting. ...
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View of two hundred ton two-way trailer, with test load Several men inspect a two hundred ton two-way trailer loaded with construction materials. The trailer stands next to a railroad track, and in front an industrial building. Mountains can be seen in the background.
 

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