Word: damming
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Dates: during 1930-1939
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Rather proud of himself, Secretary Wilbur proceeded to Las Vegas, N. M. where he joined Carl Raymond Gray, Union Pacific System's president and then on to Hoover Dam. There he exploded the first charge of dynamite in Black Canyon's wall for the 4,000 ft. diversion tunnels which will carry the Colorado River around the dam site during construction...
...heat in the canyon was intense. It had already killed one workman. Secretary Wilbur, the sweat running into his eyes, felt dizzy. Last week his department ordered physical examination for all Hoover Dam workers to determine if they were fit to stand the blazing canyon temperature (100° plus) at dam site. Much of the labor has been recruited from nearby camps of unemployed men whose physical condition has been lowered by scant rations...
...water that is coming down the Colorado River at the present time and which will come down all the time, has a mud content of from 5% to 8% and that the lake which will be formed back of the dam, to be built, will fill up with mud and silt and make same a mud lake within ten years...
...real unbiased answer from your staff. I cannot believe that this problem has not been solved, but would like to know, inasmuch as I am a tax payer in Los Angeles, which city is contemplating a large bond issue to construct an aqueduct to bring some of the Boulder Dam water to Los Angeles...
...Hoover Dam reservoir's capacity will be 30,500,000 acre-feet, of which between 5,000,000 and 8,000,000 acre-feet will be a silt pocket. Estimates of what the annual silt deposit will be vary from 80,000 to 250,000 acre-feet, but Government engineers opine that the total deposit in 50 years will not exceed 3.000.000 acre-feet. Reader Stewart's friend's figures for the silt content of the Colorado River look high. Government observations at Yuma, Ariz, noted .48% silt...