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East pit flooded behind Wakefield cofferdam (el. 965); Left foreground shows beginning of west end concrete placing trestle and east concrete mixer - at the right are aggregate stock piles and contractor's machine shops. Suspension bridge for...
1936-05-01
2024-11-25 |
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Removing fill in cells of section "H" west cofferdam, by sluicing it through openings out in the steel walls.
1936-07-01
2024-11-25 |
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Part of cells in section "H" of west cofferdam removed for river diversion. East shore-end of cross-river timber crib cofferdam at the left - east end of concrete placing trestle across the river and to its right is shown low Wakefield pile...
1936-08-01
2024-11-25 |
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South end of west cofferdam being removed by sluicing fill through holes out in the steel walls. West-mix in the distance.
1936-08-08
2024-11-25 |
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Removing cofferdam section and excavating in upper (south) end of passage way for river diversion over west end of dam foundation next year.
1936-08-25
2024-11-25 |
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Cells in section "E" of west cofferdam with filling partly removed - looking downstream.
1936-08-28
2024-11-25 |
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Cells in section "C" cut down to elevations 954-945 previous to diversion. Shows three valve-controlled river outlets into diversion channel flooding area behind west cofferdam.
1936-11-01
2024-11-25 |
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The two ends of west cofferdam removed and area west of block 40 flooded.
1936-11-20
2024-11-25 |
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Looking south (upstream) after flooding west end of dam foundation - showing the four main diversion slots, the timber plug between blocks 49 and 50 to cells in section "G" of west cofferdam and to the right the east end of west powerhouse. Center...
1936-11-20
2024-11-25 |
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Looking down diversion channel entrance where part of section "C" west coffer, has partly been removed. Building upstream cross-river coffer from east side to cluster "D"; Low east timber coffer and the two concrete placing trestles across the river.
1936-12-02
2024-11-25 |
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Removing walls of east side cofferdam by burning (Wakefield piling)
1936-12-01
2024-11-25 |
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Grand Coulee Dam, viewed from the east side. In the foreground appear trestles, and crane equipment used for placing concrete; the middle ground shows excavation work in progress in the main river channel; the background shows concrete placed...
1937-03-17
2024-11-25 |
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Downstream view of diversion channel from west shore. Part of Mason City across the river.
1937-06-23
2024-11-25 |
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Columbia River flowing through diversion channel, 262,000 c.f.s. high trestle almost completed.
1937-06-23
2024-11-25 |
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Enclosure, looking northeast from west shore. 262,000 c.f.s.
1937-06-23
2024-11-25 |
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Upstream view of dam and elevation 1024 trestle. Suspension bridge with its center tower. Lower end of diversion channel in lower right corner. Down-stream cross-river cofferdam has been removed.
1937-12-21
2024-11-25 |
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Constructing a closure gate, on east upstream shore, to be floated in place for slot in a low block in diversion channel.
1937-09-22
2024-11-25 |
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Wooden closure-gates in place, blocking off diversion slots.
1937-10-29
2024-11-25 |
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Columbia River flowing through the two west diversion slots the two near slots closed off and being filled to elevation 950. 54,000 c.f.s.
1937-11-24
2024-11-25 |
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Collapsing of cell 3 of steel cluster "G" at time of cofferdam leak, March 18, 1937. Contractor's field office burning after falling down from top of cell after collapse.
1937-03-18
2024-11-25 |
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Dumping fill on river-side of cluster "G" at time of cofferdam leak.
1937-03-19
2024-11-25 |
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Conveyor feeders removing overburden on the east side. Two grizzlies near left edge of picture.
1937-03-12
2024-11-25 |
