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already experiments left on the moon were sending back revealing new information. the mission was successfully completed. the eagle had landed the first men on the moon and columbia had returned them safely to the earth. whatever man s journey tomorrow across the ocean of universe history will remind him that apollo 11 was mankind s first encounter with a new world. up next on american history tv the story of the construction of the hoover dam. that will be fold by a 1960 interview with herbert hoover who discusses his life beyond presidency. and later u.s. army captain william johnston on his work with the army of the republic of vietnam in the 1960s. and in about an hour a new deal promotional video from 1938 on the importance of the mississippi river valley to the u.s. and that s all ahead on c-span 3. here s a look at what s ahead this labor day weekend on american history tv. saturday at 6:00 p.m. eastern the civil war and the atlanta campaign when the city f ....
served municipal and industrial needs of the pacific southwest, generate hydro electric energy and provide various other multi-purpose benefits. the clear waters have opened up the fast, new recreational fish and wildlife vacation land for america. picnic, go boating, swim, fish, and enjoy these important out door recreation products. hoover dam worked around the clock to serve water and power needs. falls over 500 feet through the spin stocks to spin the giant turbine wheels and then discharge to the river. this action is completed at downstream dams. transformers step up hoover dam voltage as it comes from the generators. lines carry this power up over the powerhouse roof to the switch yard. there it is transmitted over lines across the desert. the river flows south ward. along the way man diverts from the controlled scream to sustain his prosperous way of life. 67 miles downstream davis down reregulated the colorado s flow releasing water through its power plant turb ....
they removed temporary slabs over the relief valve outlets. liners assembled in these opens were set in concrete. the turbine scroll case sections were lowered into the pit. sections were levelled, bolted together and aligned. the completed scroll case was then anchored in concrete. later the turbines water wheel attached to the bottom end of the shaft was installed inside the case. the butterfly valve was assem e assembled on the generator floor and later connected between the feeder pin stock and the turbine scroll case. meanwhile the generators two main parts took form. steel lamination plates were stacked around the row rotor frames. coils were locked into place and connections were made. the power house lifted it from its erection bay and carried it gently to its foundation over the turbine bit where it was lowered and bolted into place. 466-ton rotor was moved from its erection bay. guide and thrust bearings and other parts were added to complete the assembly. aft ....
the u.s. government began this construction on hoover dam in 1931. the project employed over 21,000 workers. it was completed two years ahead of schedule. in 1955 department of the interior film about the planning and the building of hoover dam. the story explains the engineering feat necessary for construction and promotes economic and recreational benefits provided by the structure. build a dam in the wilderness and the world will beat a path to it. for many centuries, this was a lonely canyon unseen and untouched by man, scorched by a desert sun, scolded by an angry river slashing its way to the sea. now it lies peaceful and silent except for the gentle hum of a hydroelectric power plant, the bubbling up of water, the cheerful sounds of america and the world on the move who see this pioneer multipurpose .eclamation project man built millions come to this spot to see this engineering wonder, to hear the story of hoover dam. ladies and gentlemen, we are standing on t ....
ring 30 feet in diameter and 11 feet long. two of these rings joined, made up a section weighing 150 to 184 tons. a vertical lathe joined the edges. a train passing through one of the 30-foot sections reveals their comparative size. when they were ready to receive the pen stock a specially designed trailer hauled them down to the dam site. at the can yom rim a 150 ton cable way relieved the trailer of its burdens, swung the pipe sections out over the gorge and lowered them under absolute control. trailers waiting at portals of the access tunnels carried the home their permanent connections inside the main tunnels. the pipe sections were hoisted into location with cables, and joined end to end pressure pins to form continuous conduits between the intake towers, turbines and outlet valves. a continuous stream of concrete had been pouring into the dam forms. the structure near its full height of 726 feet, far above the crest of any other dam yet built by man. on may 29th, ....