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1101 - 1125 of 2123 Items << < 40 41 42 43 44 45 46 47 48 49 > >>
1101 - 1125 of 2123 Items << < 40 41 42 43 44 45 46 47 48 49 > >>
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Semi-steel liners forming flared entrances to outlet tunnels; and trash rack shown during early stage of construction.
2024-11-23
2024-11-23 |
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Skip-way arrangement for transferring concrete to lower placing trestle, elevation 950 west end.
1936-06-01
2024-11-23 |
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Two conveyor feeders with pendulum booms handling aggregate in Brett pit at the 1840 level, to the collecting conveyor
1936-09-01
2024-11-23 |
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Aerial view looking due west and showing excavation behind cross-river cofferdams. The two placing trestles extending from Eastmix in the foreground; conveyor bridge in upper right.
1905-04-19
2024-11-23 |
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Constructing the foundations of both powerhouses was a part of the MWAK contract, in which they bid the concrete below the turbine floor at $7.00 per cubic yard and that above the turbine floor at $10.00 per cubic yard. The completion of the left...
2024-11-23
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Placing and leveling a base-plate on which to construct the rotor of one of the Shasta generators.
1942-06-26
2024-11-23 |
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The hoisting mechanism of the 10,000-pound elevator in Block 11. It consists of a 120 h.p. direct-current motor; a drum for the cables which support the car and counterweights; brake drum, shoes, and magnet; brake switch; and mileage recorder. The...
2024-11-23
2024-11-23 |
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150-ton "streamlined" crane, which will operate on the left abutment of dam roadway. This crane has been completed except for the installation of the permanent wiring, which is now in progress by government electricians. The crane is used in the...
1941-10-21
2024-11-23 |
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Battery room of the left powerhouse. These storage batteries, 120 cells in all, will supply direct current for operation of control equipment, emergency lighting, emergency pumps, and other equipment.
1940-10-26
2024-11-23 |
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The first of 12 pump inlet pipes is set to line and grade at the pumping plant foundation.
1940-02-12
2024-11-23 |
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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
2024-11-23 |
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The steam heating plant "Iron Duke" used by the contractor to protect concrete during the cold weather was mounted on barges moored to the upstream face of spillway block No. 53.
1939-11-06
2024-11-23 |
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The contractor transfers a power barge to the upstream side of the dam.
1939-04-06
2024-11-23 |
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The downstream of one of the el. 934 conduits showing condition of concrete prior to refinishing. The circular blockouts at the contraction joints are also visible. Upon completion of concrete cooling and contraction joint grouting in this area...
1938-01-01
2024-11-23 |
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Automatic aggregate weighing batchers at the concrete mixing plants. After the aggregate is weighed, it is dumped into the mixers which are one the floor directly below.
1938-12-28
2024-11-23 |
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Feeder and collecting conveyors at elevation 1840 in Brett pit.
1936-04-01
2024-11-23 |
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Excavation behind low Wakefield cofferdam. Shore-end of upstream cross-river coffer at left. Across the river are cells in section "D" of west cofferdam. Upper right is main soil conveyor to Rattlesnake canyon.
1936-09-14
2024-11-23 |
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Here is shown the assembly and installation of the tandem ring-seal gates for the outlet tubes before embedding in concrete. Sections of the 8 1/2 foot diameter steel tube liners were set in position and then welded into a continuous tube.
2024-11-23
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In April of 1938 drilling and blasting of rock on the upper part of the east abutment was started. From these abutment areas workmen drilled, blasted, and barred down thousands of tons of weathered and loose rock. Excavation of the rock for the...
1938-04-01
2024-11-23 |
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Generators L-3 and L-2 in operation in the west powerhouse, and L-1 nearly ready for service.
1942-03-17
2024-11-23 |
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View looking downstream over the reservoir area from WPA Camp Gifford, taken from a point at elevation 1290, the ultimate high-water line of the reservoir. Burning of the debris piles in the foreground will complete all clearing seen in this view.
1941-02-15
2024-11-23 |
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Assembly in progress on the rotor for a 108,000 kv.-a. generator at the left powerhouse. The extension pieces have been attached to the shorter arms or spokes of the spider, and stacking of the rotor rim laminations or plates has been started. The...
1941-02-26
2024-11-23 |
