Different procedures in the construction of Boulder Dam on the Colorado River in the United States. Concrete being placed in the lowest level of the dam with a bucket. Men at the site. Work underway at the dam site. Different structures of the foundation of the dam. Motor trucks along a road. Concrete being placed on the entire lower level of the structure from a trestle anchored to the wall of a canyon. Concrete placed in interlocking columns. Transit mixers place the concrete in confined form. Buckets of concrete transported by a cable way. A bucket lowered into the forms. Safety locks of the bucket are unlatched and the concrete is dumped. Men at work in the confined form. Workmen in the skid way go to the top forms. Work underway at the dam. Buckets carrying concrete in a cable way. A part of the dam structure in view.
Stages of the construction of Boulder Dam on the Colorado River in the United States. A power plant under construction. A U-shaped structure downstream of the dam under construction. Two men near the structure. Intake towers, two on each side of the river, upstream from the dam, perched on shelves in the canyon walls. The two towers on one side of the river. Men at work on the structure. Two spill ways, one on each side of the canyon.
Installation of steel pipes during the construction of Boulder Dam on the Colorado River in the United States. A steel fabrication mill near the dam site. Motor vehicles parked outside a building. The plant beside the building with the name 'Babcock and Wilcox Co.' on the building, to whom the fabrication and installation of the steel pipes has been awarded. Steel pipes stacked near the building. A crane near the building stacks plates. A man near a stack of plates. Men at work in the plant. A man near a planing machine on which the plates are shaped. A press used for curving the plates. Men in the plant. A man in the plant near the press. Two men near a vertical roll in which the plates are rolled to a correct degree of curvature. A man operates the roll. Curved plates in view. Men at work in the plant. The curved plates are arranged. A man welds and joins the curved plates to form a ring. Two men weld the joints inside the ring. A man wearing a helmet welds the joints.
Different steps in the fabrication and installation of steel pipes during the construction of Boulder Dam on the Colorado River in the United States. Pipe sections near a plant. The pipe sections transported from the plant to the dam site on a trailer driven by a truck. The truck trailer with the pipe section on a path. Rocks in view behind the path. Motor vehicles behind the trailer. The trailer arrives at the dam site. A cable way across a canyon for taking the pipe sections to position. The cables of the cable way anchored to the canyon walls. A tower above the canyon. An operator controls the cable way from the tower. A man operates the hoisting machinery controlled by motors. A steel head tower at the site. A man on a tower. A cable carriage on a rope. A man comes down a line on the pipe section. Pipe sections carried by the cable carriage across the dam site.
Transportation and installation of steel pipes during the construction of Boulder Dam on the Colorado River in the United States. A pipe section is lowered into a canyon by cables. Cars carry the pipe sections into a tunnel. Workmen watch the procedure. Men at the entrance of the tunnel. The pipe sections are taken into the tunnel for installation. Work underway inside the tunnel. The workmen work on pipe sections. A man climbs up the section by a ladder. Other men at work on the section.
Boulder Dam site where installation work of steel pipes and concrete work is going on in the United States. The Boulder Dam site in view. Work under way in a tunnel. Rail cars bring concrete to the dam site. Construction underway at the site. Concrete taken in buckets transported by a cable way is dropped into interlocking columns. Men in the columns. A skid way in view. The structure of the dam which has risen to a considerable height. A U-shaped structure also in view.
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