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Washington State University Libraries
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Blocks in dam west of cofferdam; block-outs for penstocks; high and low placing trestles.
1936-12-02
2024-11-25 |
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Upstream face of dam showing low gaps for river diversion. Suspension bridge for aggregate conveyor to Westmix. Mason City across the river.
1936-12-02
2024-11-25 |
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Three of the low slots in dam, east of west cofferdam, for passage of river during diversion. Slots are 50 feet wide with floor level at elev. 910.
1936-07-01
2024-11-25 |
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Gantry and stiff-leg cranes on the east end of dam. Ice-dam gorge in lower left.
2024-11-25 |
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Concrete placed in east end of dam, as of December 19, 1936
1936-12-19
2024-11-25 |
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Pier No. 2 Enlargement Modification of Design
1936-03-05
2024-11-25 |
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Caisson around highway bridge pier No. 2 during repairs and enlargement.
1936-01-20
2024-11-25 |
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Bridge pier repairs. Inside caisson (interlocking piles) showing top rows of 36-inch I-beam walers and timber bracing.
1936-01-30
2024-11-25 |
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Repairing highway bridge pier No. 2. Caisson of interlocking steel piling. Wales are 36-inch I-beams.
1936-02-06
2024-11-25 |
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Keys grooved in old concrete in base of pier No. 2 of highway bridge, prior to adding 8,400 yards as reinforcement.
1936-04-01
2024-11-25 |
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Repairs to highway bridge pier No. 2. Shows 36-inch I-beam inside steel caisson around pier and cuts in old concrete pier as keyways for additional concrete
1936-04-01
2024-11-25 |
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Repairs to highway bridge pier No. 2. Bridge in foreground, and pier to the left. Upstream is cat-walk, and trestle for conveyor running from east side to main 60-inch conveyor transporting overburden to Rattlesnake Canyon
1936-04-17
2024-11-25 |
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Highway bridge with pier No. 2 repairs almost completed.
1936-05-04
2024-11-25 |
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Caisson around highway bridge pier No. 2 flooded after completion of repairs.
1936-05-12
2024-11-25 |
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Contractor's employees receiving their "brass" in going on shift at west guard office.
1936-07-17
2024-11-25 |
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Standard rain gauge and thermometer instruments in weather station located near concrete testing laboratory.
1905-04-19
2024-11-25 |
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Timber struts bracing interlocking steel pile walls enclosing excavation pit for block 40. Whirley crane for handling overburden on tracks to the right. Upper right-hand corner shows portion of west 60-inch spoil conveyor.
1905-04-19
2024-11-25 |
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Winter scene, river frozen over. Cat-walk in lower right, temporary pile bridge in upper part ; overhead is suspension bridge carrying aggregate conveyor to westmix and the west cofferdam.
1936-02-01
2024-11-25 |
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Berm of Gravel west of section "E" of west cofferdam transported by conveyor from east side pit and placed by 36-inch belt, material diverted at suspension bridge tower.
1936-03-31
2024-11-25 |
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Cribs in wood plug closing spillway slope on blocks 39 and 40 to steel cell - cluster "G" in west cofferdam. A total of 2-1/2 million board-feet of lumber used in plug.
1936-04-01
2024-11-25 |
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East Wall of "block 40" steel pile enclosure exposed under bracket trestle carrying conveyor that transported berm-fill between "40" and section "E" of west cofferdam, of which cell in section "D" is shown at extreme right. Mixer on east side...
1936-04-01
2024-11-25 |
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Berm on west side of section "E" west cofferdam, looking south ; steel cells in center are in cluster "D";
1936-04-30
2024-11-25 |
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Gravel Berm on west side of section "E" placed by temporary conveyor. Material diverted from bridge conveyor at center tower.
1936-04-30
2024-11-25 |
