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576 - 600 of 2123 Items << < 19 20 21 22 23 24 25 26 27 28 > >>
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Heavy reinforcing steel in place in the transformer deck and service bay of the east powerhouse.
1942-03-31
2024-05-17 |
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Temporary bridge across the upstream slide area. When the slide carried away a portion of the highway, this bridge was built. It will be used until permanent repairs can be made.
1940-11-26
2024-05-17 |
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Cofferdam removal near to completion at the close of 1937. The clamshell is unloading and removing cribbing in the spillway bucket section at blocks 39 and 40.
1938-01-01
2024-05-17 |
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4-yard shovel, 12-yard truck, and powder crew on rock cleanup in east tailrace area.
1937-06-04
2024-05-17 |
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Upstream face of dam, showing fillet and one of the 50-foot wide diversion slots.
1936-11-01
2024-05-17 |
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North end of block 40 in foreground, timber crib plug to cofferdam cell cluster, center tower of aggregate suspension bridge tower in cell 5, cofferdam section "G"; Bridge spans on both sides of tower, 1437 feet. Elevation, top of tower 1280,...
1936-01-01
2024-05-17 |
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Looking through high trestle bents at ice dam in deep crevice on ease side.
1936-09-29
2024-05-17 |
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Here is shown the manner in which the copper cable was laced thru the reinforcing web on the inside of the pier plates.
When current is sent thru this cable it will cause the steel plates to become warm by electromagnetic induction, thus...
2024-05-17
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Here a steelworker is setting the downstream leg of a trestle tower during the erection of the CBI trestle. As the dam grew, all but the floor sections of both the MWAK and CBI trestles were buried and forever lost.
2024-05-17
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Workmen installing Allis-Chalmers oil circuit breakers in the temporary 115-kv. switchyard.
1942-03-20
2024-05-17 |
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West wall of L-8 generator pit, through which workmen are cutting an opening for the penstock of a Shasta turbine. The wall was first drilled, then the center section will be blasted. Photo of workmen operating chippings guns.
1942-05-13
2024-05-17 |
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Assembling the structural steel spider of a Shasta generator.
1942-07-20
2024-05-17 |
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The new Bureau of Reclamation mixing plant, erected near the large waste-sand pile on the east side of the river to supersede the contractor's plant. A two-yard, double-cone, tilting-type mixer will discharge batches through the floor into trucks...
1942-11-19
2024-05-17 |
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Main unit L-3 generator-voltage bus structure in the elevation 1012.5 transformer bus gallery of the left powerhouse.
1941-11-19
2024-05-17 |
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Crown plate is placed on the scroll case of the 150,000 horsepower turbine for main unit L-3. A test ring (which does not show in this photograph) and the crown plate are temporarily assembled on the scroll case for the purpose of making the...
1941-02-06
2024-05-17 |
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Falsework and forms for the construction of the arch-type highway spans over the eleven drum gates in the 1650-foot spillway. The bridges will be comprised of 7400 cubic yards of heavily reinforced concrete. The elevation of the water in the...
1941-06-26
2024-05-17 |
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A crew of skilled mechanics work on the alignment of the anchor hinge castings for one of the huge drum gates. There are 40 of these hinges required for each gate.
1940-11-30
2024-05-17 |
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Shovel, bulldozers, and buggies removing overburden in east tailrace area. Riprapped tailrace slope shown in upper right, and excavation conveyor in foreground. East tower of aggregate suspension-bridge in upper part of photograph.
1937-03-12
2024-05-17 |
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Concrete blocks and high trestle bents west of spillway section.
1936-05-22
2024-05-17 |
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A Shasta generator shaft in an upright position, preparatory to the construction of the rotor.
1942-07-15
2024-05-17 |
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A bucket conveyor will be used to lift aggregate from timber bunkers to the top of the new Bureau of Reclamation mixing plant, where a chute will direct the flow into any one of three compartments of a storage bin.
1942-11-19
2024-05-17 |
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Workmen placing glass blocks in downstream windows of west powerhouse.
1942-06-26
2024-05-17 |
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A closure gate moves slowly into position. When rollers of the gate are placed against the roller path guide frame (the truss of which is visible); the derrick will lower the gate, thereby cutting off the river flow through this diversion channel....
2024-12-17
2024-05-17 |
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Cells in section "E" of west cofferdam with filling partly removed - looking downstream.
1936-08-28
2024-05-17 |
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Excavating on east side behind south end of Wakefield cofferdam. Material transported by 90-inch conveyors across river on trestle to main conveyor running to Rattlesnake Canyon.
1936-10-01
2024-05-17 |
