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High level concrete mixing plant at Boulder Dam (Hoover Dam) construction site, Nevada.
Construction of Hoover Dam shows a large tractor crane operating. Crane shovel picks up a scoop of sand and gravel from ground. Cargo train crosses a bridge over river. Equipment processes raw materials. Raw material is dumped into hopper from where material is conveyed into plant over belts. Equipment operates. Washing of gravel and sand. Sand and gravel loaded into rail car for transportation. Train loaded with raw material moves on track. Concrete mixing plant equipped with heavy machines. Railroad cars used to transfer material. Men work with pneumatic pump. High level concrete mixing plant shows an operator besides equipment which controls the proportion of concrete ingredients and maintains graphic control. Man at control deck of plant operates the equipment. Raw materials on conveyor belt are dumped into rotary motor. Materials transferred by electric trains. High capacity dump trucks are used. Buckets loaded with materials are transferred by electric trains. Aerial cable ways used to transfer material.
Concrete buckets suspended by cables are dropped on ground at Boulder Dam (Hoover Dam) construction site, Nevada.
Construction of Hoover Dam in June 1933. A bucket of concrete is lowered on ground from mountain top. Base of structure is prepared. Vehicles move on road on Canyon (Black Canyon) wall. Buckets of concrete suspended by cables are dumped on ground. Material is offloaded from truck and transferred through cable ways. Concrete buckets transferred from cliffs. Bucket descends and received by men on ground. Men shovel concrete and operate equipment. Workers from Canyon rim are transferred on ground. Concrete bucket lowered on to construction site. Construction in progress. Two intake towers on each side of the Canyon wall. Other structures constructed for dam.
Giant pipe units fabricated at Babcock and Wilcox Mill for Boulder Dam construction, Nevada.
The construction of Boulder Dam, later renamed as the Hoover Dam. Exteriors of Babcock and Wilcox Mill near Boulder Dam construction site, Nevada. Steel sheets manufactured. Technicians and workers work with equipment. Pipe units are made from sheets after shaping the sheets. Worker welds sheets. Man work with equipment during laboratory tests. Men work with huge pipe units. High capacity cranes swinging pipe unit. Giant lathe used to join individual sections of pipe units. Pipe section ready for insulation. Tractor trailer carrying a giant pipe unit on road. Pipe unit on Canyon rim, exactly over the dam site. Pipe unit is maneuvered for loading into the Canyon. Man at control tower of the cable way on cliff. Pipe unit transferred through cable ways. Pipe lowers into the canyon. Pipe units taken into tunnel.
Hoover Dam structure including four intake towers, spillways and giant power plant, Nevada.
The construction of Boulder Dam, later renamed as the Hoover Dam. Structure of dam erected into canyon. Equipment in tunnels. Giant cranes in operation. Concrete arch-dam in the Black Canyon. Traffic moves on highway over dam. Boat in Colorado River. People sail in boats. Colorado River view. Four intake towers at Hoover Dam. Spillways at Hoover Dam. Hoover Dam power plant to general power. Man points to the map of United States. Electric power setup for the Hoover Dam shows various electric towers, power house and electric lines across desert. Hoover Dam controls water.
Power transmission lines from Boulder Dam power plant and map depictions of water supply from Parker Dam and Imperial Dam.
A power plant at Boulder Dam and pictorial depictions of water supplies from Parker Dam and Imperial Dam serving California. The two wings of Boulder Dam power plant, one along each side of the Black Canyon wall. The power plant with different units for generating power. The machinery inside the plant. The major transmission lines that carry power to Los Angeles California metropolitan areas. Two men in the plant near transmission lines. A map depicts the path of power transmission lines. The power plant with turbines. The transmission lines along a desert. A path in the desert. A map depiction of water supply from Parker Dam to the city of Los Angeles. A map depiction of water supply to the Imperial Valley from Imperial Dam. The whole of the Boulder Dam (later Hoover Dam) in view with water gushing through the gates.
Designer and inventor drives a crash proof, bug like car through busy streets in California, United States.
A new crash proof automobile in the United States. The designer stands near the crash proof car. The engine in the rear of the car. The bug like car sits five in the front and drives through busy streets. It looks like a bug or insect on wheels.