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A slide on the east forebay slope which occurred February 28, 1937. The top of the broken area is at elevation 1060 and the toe of the slide is resting against a rock outcrop at about elevation 900.
1937-03-02
2024-11-24 |
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The "ice dam" with backfilling work in progress upstream from blocks 65, 66, and 67.
1937-04-24
2024-11-24 |
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Excavating on 1840 level in Brett gravel pit, August 4, 1937.
2024-11-24
2024-11-24 |
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Screening and washing plant at Brett pit. Trommel secondary screens in building below raw stock pile; next is balancing pile from which two conveyors lead to top of screening and washing plant. The two clarifiers, with the capacity of 3-1/2...
1937-09-10
2024-11-24 |
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Two conveyors running from screening and washing plant to two sizes of finished gravel piles over 48-inch main conveyor for transportation to mixer stock piles.
2024-11-24
2024-11-24 |
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Center tower of suspension bridge carrying 36-inch conveyor for transportation of aggregate across to Westmix. Tower foundation is in a cell of section "G" in west cofferdam.
2024-11-24
2024-11-24 |
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Special footings for bents of trestles, at crevices in foundation.
2024-11-24
2024-11-24 |
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Extending elevation 1024 trestle out from concrete mixing plant on east side.
2024-11-24
2024-11-24 |
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Removing rock in area east of block 40; elevation 1024 trestle under construction toward east end, June 04, 1937
1937-06-04
2024-11-24 |
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Joining of two ends of elevation 1024 trestle after waiting for approved rock on sides of crevice in foundation. Upstream crossriver cofferdam in distance, June 30, 1937
1937-06-30
2024-11-24 |
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Erecting girder of elevation 1024 trestle, June 03, 1937
1937-06-03
2024-11-24 |
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East end of west section of high trestle, June 3, 1937
1937-06-03
2024-11-24 |
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East and west sections of elevation 1024 trestle about to be connected.
1937-07-12
2024-11-24 |
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Closing east and west sections of high trestle, July 12, 1937.
1937-07-12
2024-11-24 |
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High and low trestles, looking west. Reinforcing steel for east power house penstocks.
2024-11-24
2024-11-24 |
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Lowering 4-yard concrete bucket by cantilever crane from high trestle.
2024-11-24
2024-11-24 |
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"Bell-Boy" telephoning signals from concrete block to crane operator on high trestle.
2024-11-24
2024-11-24 |
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Dumping concrete in spillway bucket; invert elevation 870.
2024-11-24
2024-11-24 |
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East end of high trestle. Snow covers east abutment rock.
1937-02-17
2024-11-24 |
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East end of dam showing fillet upstream. Cantilever crane on high trestle.
1937-04-23
2024-11-24 |
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East end of high trestle with cantilever concrete-placing crane. Grouting and drainage gallery shown in foundation blocks.
2024-07-24
2024-11-24 |
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Preparing surface of concrete for next pour by washing with air and water. One-inch cooling pipe on top of lift pour.
2024-11-24
2024-11-24 |
