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The two placing trestles, and upstream section dam between west abutment and west cofferdam.
1936-07-23
2024-11-25 |
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Looking east toward blocks 39 and 40 - part of section "D" west cofferdam, to the right; high trestle on left.
1936-07-01
2024-11-25 |
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Thirty-six inch cooling shaft in center of a block being prepared for a pour.
1936-05-30
2024-11-25 |
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Typical transverse gallery with headers for cooling system.
1936-08-01
2024-11-25 |
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Looking down on distributing manifold in cooling shaft in block 22
1936-12-01
2024-11-25 |
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Longitudinal gallery, 900 elevation, with supply and return headers for cooling system.
1936-08-01
2024-11-25 |
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Looking toward west side of block 40. Drainage and grouting gallery at elevation 880, and the 900 elevation galleries, bents for "1024" trestle to the left, and tie-in to cell in cluster "D" of west cofferdam.
1936-08-28
2024-11-25 |
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Bucket at toe of dam under construction, east of block 40. Low trestle (elev. 950) in upper left.
1936-08-28
2024-11-25 |
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A Grand Coulee Dam night view, showing area west of cofferdam in foreground, suspension bridge for Westmix aggregate, highway bridge, Mason City across the river, and Brett gravel pit in upper right.
1936-09-29
2024-11-25 |
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Concrete finishing at bottom of "bucket" at toe of spillway - elevation 870, radius 50 feet. End of 950 elevation placing trestle at right.
2024-11-25 |
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Grout tank and pumps for grouting contraction joints.
1936-09-01
2024-11-25 |
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A pair of grouting pumps and stock of special cement.
1936-09-01
2024-11-25 |
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Upstream face of dam, showing fillet and one of the 50-foot wide diversion slots.
1936-11-01
2024-11-25 |
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Upstream side of dam, showing concrete tie to a steel cell in section D of west cofferdam
1936-11-01
2024-11-25 |
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Reinforcing steel around the 18-ft. diameter penstocks - west power house. High (elev. 1924) trestle at lower left.
1936-11-11
2024-11-25 |
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One of four concrete blocks in dam left low (elevation 910) for passage of river during diversion next year. Blocks are 50 feet wide.
1936-11-01
2024-11-25 |
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Three of four main low slots (elev. 910) west of "block 40" for river diversion in 1937, estimated capacity of all, 80,000 c.f.s. Bents in high trestle in upper part; wood spillway plug to cofferdam section "G" in lower left.
1936-11-01
2024-11-25 |
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Looking west - passages in foreground for river diversion; part of bucket at toe of dam; the west training wall; penstock forms for left power house; and high trestle running to Westmix
1936-11-01
2024-11-25 |
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Reinforcing around 24-foot hexagonal blockouts for 18-foot penstocks. Top of 1024 elevation trestle in distance.
1936-11-01
2024-11-25 |
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Temporary bulkhead gates in set of three draft tubes - west power house.
1936-11-01
2024-11-25 |
