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276 - 300 of 431 Items << < 7 8 9 10 11 12 13 14 15 16 > >>
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The finished outlet portal of one of the 12 pumping plant discharge tunnels.
1939-02-08
2024-05-16 |
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Contractor's employees receiving their "brass" in going on shift at west guard office.
1936-07-17
2024-05-16 |
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The Columbia River at flood stage flows over 16 low blocks in the spillway section of the dam. The outlet conduits at elevation 934 were also used for river diversion and at this date 18 of the 20 conduits were open.
1939-06-01
2024-05-16 |
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The Columbia River at flood stage is diverted over spillway blocks at elevation 995. the conduit liners are in place for the outlet works at elevation 1036.
1939-06-01
2024-05-16 |
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An interior view of one of the 12 pumping plant discharge tunnels. At this section, the tunnel is 17 feet in diameter and with the exception of final trim and cleanup, all work has been completed.
1939-03-24
2024-05-16 |
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At the close of 1939, Consolidated Builders had completed 68.5% of the contract work for Grand Coulee Dam. With more than 9,000,000 cu. Yds. Of concrete in the structure, the right and left abutment sections were within 100 feet of the top and...
1939-12-01
2024-05-16 |
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Exhaust blowers were used to ventilate the pumping plant discharge tunnels while excavation was in progress.
1939-01-09
2024-05-16 |
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Daily log of Glover's work on water projects throughout the U.S. West in 1942 and time book that belonged to Fred Cornwell, USBR
2024-05-16
2007-01-03 2007-01-03 |
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Dams across both ends of the Grand Coulee will form it into a giant reservoir for storing the water pumped from the river.
2024-05-16
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The lecturer at the Government's West Vista House displays a model of the west cofferdam and west portion of the dam in the river diversion stage of construction.
2024-05-16
2024-05-16 |
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Grand Coulee Dam: Location of Test Holes, Pits, and Trenches
1905-04-17
2024-05-16 |
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The hydraulic model of Grand Coulee Dam, built to a scale of 1 inch equals 5 feet. Operating automatically, the model displays, in a 5-1/2-minute prior, the principal hydraulic features of the dam as they will occur during a typical year.
2024-05-16
2024-05-16 |
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A portable model of the Grand Coulee Dam, built to a scale of 1 inch equals 80 feet.
2024-06-16
2024-05-16 |
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Consolidated Builders' working model of the dam. The small square blocks represent a block pour or 5-foot lift of concrete and are added to the model to show the progress of construction as well as to correlate all construction activities.
1938-11-03
2024-05-16 |
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Department of the Interior: Bureau of Reclamation Columbia Basin Project - Washington: Grand Coulee Dam-Government Camp: Building Locations
1935-07-10
2024-05-16 |
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The lecturer at the Government's West Vista house displays a cross section of the spillway of the dam. He is pointing out the location of the 102" diameter outlet conduits, the downstream ends of which are also visible in the model of the dam.
2024-05-16
2024-05-16 |
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The lecturer at the Government's free grandstand displays a model of the cross river cofferdams and the strategic block 40.
2024-05-16
2024-05-16 |
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Third Volume, Forty Ninth issue, of the Mason-Walsh-Atkinson-Kier CO. builders of Coulee Dam Safety Newsletter. Created by the Safety Department and issued to the residents of Mason City and contract workers at Grand Coulee Dam.
2024-05-16
2024-05-16 |
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Storage of aggregate at mixer stock piles - capacity 90,000 tons, or a 3 1/2 day run at maximum concrete output.
1935-04-27
2024-05-16 |
