Construction of Hoover Dam in the United States. Construction equipment work on the construction site. A train transports raw material. Construction material including sand and gravel transfered on conveyor belt. Sand and gravel mixed with cement to concrete the dam structure. Concrete transfered via cables. Views of the construction site as the dam takes shape. Engineers shovel the mud. Views of U-shaped power plant, support buildings and intake towers. Views of the dam showing its architecture.
Various dams on Colorado River in the United States, primarily serving California. Parker Dam is at a point 155 miles (250 km) downstream of Hoover Dam. View of the dam. Power plant of the Parker Dam. Canal that provides industrial supplies. Views of Parker Dam, Imperial Dam, Palo Verde Diversion Dam, Hoover Dam and Morelos Dam showing their canals system. Views of the Colorado River.
Hoover Dam in the United States. Farmers grow crops by Hoover Dam water. A man plucks fruits from a tree. A man drives a tractor loaded with cartons. Farm machinery transport food product at factory and then transfered on conveyor. Views of the Hoover Dam. Engineers at dam site.
Message from the United States Post Office Department. Postal office personnel unload mail and letters from the transport vehicle. The pile of mails. Personnel sort mails according to zone numbers. View of mail and address written on it. The personnel arrange mails in pigeon holes.
Baseball game in the United States. Boys play baseball game in field. Spectators standing at edge of field.
Demonstration of the capabilities of the small snow vehicle, Weasel in the United States during World War II. Military personnel skiing on snow covered land and use artillery for military operations. Dogs pull sled. Book is read. Sign on the book 'War Department Specification, Vehicle T-15'. Mules carry troops and equipment. Aerosled, jeep, half track and snow truck being driven on snow covered land. Swamp buggy is driven in water. Model of small snow vehicle called the Weasel. Its height, width and tracks are shown. It shows its parts and describes its capabilities. Various parts include engine, gas tank, Steering, breaks, clutch, accelerator and instrument box.
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