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Installations, automatic machinery and different containers at the site of Boulder Dam in the United States.
Mixing plants and transportation of materials around the dam site during the construction of Boulder Dam on the Colorado River in the United States. The mixing plants at the Boulder Dam site. Huge concrete mixers in the plant. A man near an automatic machinery which controls the mixing of ingredients as well as records every operation. An operator near the control deck directs the entire mixing cycle. A man sets the machinery. Different types of machinery in the mixing plant. Ingredients loaded from hoppers onto conveyor belts. The conveyor belts carry the material and unload it into rotary mixers. A man oversees the procedure. The rotary mixers in the plant. A man near the rotary mixers. Different types of containers used to transport concrete. Men at work on the truck carrying the containers. The concrete mixers and other fixtures in the plant.
Concrete foundation work by a cable way and work in progress at the site of Boulder Dam in the United States.
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.
Construction of a power plant and spill ways during the construction of Boulder Dam in the United States.
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.
Steel pipes' fabrication and installation work at the construction of the Boulder Dam in the United States.
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.
Steel pipes' fabrication and testing before their installation during the construction of Boulder Dam in the United States.
The fabrication of steel pipes during the construction of the Boulder Dam on the Colorado River in the United States. A man stands near a complete shop unit. Three curved plates are joined to form a ring. Two men in the plant. The ring sections arranged on either side. A man operates an X-ray machine used to examine welded joints. A man at a table. A man in a laboratory tests samples of welded joints. A man takes reading after testing. Men near the ring section. Another man brings a ladder. A man steps on the ladder near the section. Men at work on the welded joints. The rings being carried by hooks The ring section taken into annealing furnace for heating to equalize bending and welding strains. A man tightens the joints in the ring section with equipment. A man near a shop unit. A hook hangs beside the unit. A rail car arrives. Men on either side of a track.
Transportation of steel pipes to the dam site for installation at the site of Boulder Dam in the United States.
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.