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The start of excavation for the removal of overburden from the west tailrace slide area.
1940-12-09
2024-11-24 |
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A slide occurs adjacent to the U.S. Construction highway and upstream from the dam. Later in the year, another slide occurred in this same area to damage the highway and the rubble masonry retaining wall. See CB 4932
1940-06-11
2024-11-24 |
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A slide upstream from the dam undermines a section of the U.S. Construction highway and carries away a portion of a rubble masonry retaining wall. A slide occurred in this same area earlier in the year. See CB 4498
1940-10-31
2024-11-24 |
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Temporary bridge across the upstream slide area. When the slide carried away a portion of the highway, this bridge was built. It will be used until permanent repairs can be made.
1940-11-26
2024-11-24 |
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Earth movements in the right tailrace slide area undermine the contractor's shop building.
1940-02-01
2024-11-24 |
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Concrete placing is resumed at Coulee Dam following the winter shutdown.
1940-02-29
2024-11-24 |
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Construction in progress on the outlet works trashrack structures and the drum gate chambers in the spillway crest.
1940-05-16
2024-11-24 |
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The 5,500 g.p.m. atmospheric, deck-type cooling tower erected at Coulee Dam to expedite the cooling of the concrete.
1940-11-12
2024-11-24 |
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A pumpcrete machine in action. Concrete is dumped into this machine which pumps it through pipelines to wherever desired. The pumpcrete method was used to backfill around the penstock pipes and to backfill the twist adjustment slots.
1940-03-25
2024-11-24 |
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General view of the left powerhouse at the start of the 1940 construction program. The control bay has not been built above the el. 1012 level and construction is still in progress on the service bay.
1940-02-29
2024-11-24 |
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A distinguished and veteran Senator visits Grand Coulee Dam. From left to right, Congressman Charles H. Leavy of Washington, Senator Homer T. Bone of Washington, Senator George W. Norris of Nebraska, and Senator Mon C. Wallgren of Washington;...
1940-10-25
2024-11-24 |
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The first cars drive along a completed portion of the roadway atop the right abutment section of Grand Coulee Dam. As of this date, 700 feet of 30-foot width roadway had been completed.
1940-08-02
2024-11-24 |
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The 1650-foot spillway section of Coulee Dam. Practically all of the concrete work for the spillway crest is completed and construction of the piers are in progress.
1940-10-23
2024-11-24 |
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Completed trashrack structures for the right group of penstocks.
1940-07-31
2024-11-24 |
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Completed trashrack structures for the twelve pump inlet pipes at the pumping plant foundation.
1940-10-23
2024-11-24 |
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Winter's icy grip on a spillway bridge pier at Grand Coulee Dam.
1940-11-12
2024-11-24 |
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One of the two 350-ton traveling cranes installed in the left powerhouse.
1940-06-28
2024-11-24 |
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Spinning a web of steel bars for the reinforcement of the drum gate chamber concrete.
1940-07-12
2024-11-24 |
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Mats of reinforcing steel for a spillway drum gate installation.
1940-07-13
2024-11-24 |
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The east or right end of the spillway section of the dam prior to installation of drum gates Nos. 1, 2, and 3.
1940-10-15
2024-11-24 |
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Supervising Engineer F. A. Banks displays the Grand Coulee Dam construction model to Thomas E. Dewey, distinguished New York District Attorney.
1940-02-11
2024-11-24 |
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Induction heating coils behind the pier plates will prevent water from freezing and interfering with the operation of the drum gates.
1940-08-26
2024-11-24 |
