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901 - 925 of 2123 Items << < 32 33 34 35 36 37 38 39 40 41 > >>
901 - 925 of 2123 Items << < 32 33 34 35 36 37 38 39 40 41 > >>
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Installing coils and making connections at the junctions of the four sections of a Shasta stator, and testing the insulation of coils.
1942-08-21
2024-11-23 |
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View of left powerhouse from the elevation 1180 construction trestle, showing transformer deck, transformers, portal frames, and lightning arresters at left.
1941-06-30
2024-11-23 |
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Interior view of the left powerhouse, with the installation of the thrust bearing for the 108,000 kv.-a. generator in progress in bay L-3.
1941-07-05
2024-11-23 |
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Main unit L-3 turbine runner (water-wheel) suspended over turbine pit in left powerhouse, and about to be lowered into position.
1941-04-26
2024-11-23 |
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Engineers checking anchor hinge alignment for drug gate #11 (bay #1);
1941-02-12
2024-11-23 |
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Spinning a web of steel bars for the reinforcement of the drum gate chamber concrete.
1940-07-12
2024-11-23 |
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Conveyor suspension bridge and west cofferdam. Contractor's machine shop in foreground.
1935-09-26
2024-11-23 |
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The contractor's drain tile manufacturing plant. The 5-inch i.d. porous concrete drain tile is embedded in the "A" blocks of the dam to become a part of the extensive drainage system.
2024-11-23
2024-11-23 |
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Cells in section "C" cut down to elevations 954-945 previous to diversion. Shows three valve-controlled river outlets into diversion channel flooding area behind west cofferdam.
1936-11-01
2024-11-23 |
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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
2024-11-23 |
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Water used in washing the gravel was de-silted in the two large tanks in the foreground, and thus was used over and over again for the preliminary washing of the gravel, saving much pumping from the river. The raw aggregate entered the plant on...
2024-11-23
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Excavation in progress on the rock point known as "Dragon's Tooth" which was removed to provide space for a future parking area.
1938-06-30
2024-11-23 |
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Grout tank and reciprocating pump set up for grouting bed-rock.
1936-11-01
2024-11-23 |
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This view of Rock Island Dam, some 150 miles downstream from Grand Coulee Dam, shows the fish ladders located at both ends of the dam, and one in the center at the end of the island. The fish trapping and loading devices have not yet been...
2024-11-23
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The gravel processing plant was rebuilt between contracts into the world's largest plant of its kind; twice the size of the one used at Boulder Dam. Its capacity was 20,000 cubic yards of aggregate per day. The four towers on the far side of the...
2024-11-23
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The bus structure base which will support the heavy power conductors leading to the pumping plant. The steel dowels are for the concrete walls of the box-like gallery structure, which will enclose the conductors and which will be built at some...
1905-04-22
2024-11-23 |
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Upon completion of excavation and foundation grouting, a gantry crane runway was laid on the pumping plant foundation rock at elevation 1163.
1939-10-12
2024-11-23 |
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Removing walls of east side cofferdam by burning (Wakefield piling)
1936-12-01
2024-11-23 |
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Looking from west tailrace at operations placing downstream cross-river cofferdam and removal of section "H" west cofferdam.
1936-12-02
2024-11-23 |
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Timber cribs for cross-river cofferdams, stored in upstream end of diversion channel. 950 elevation cofferdam across the river; also shore-end of upstream cross-river cofferdam; part of high placing trestle; and Eastmix.
1936-09-27
2024-11-23 |
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Forty-eight inch conveyor belt transporting finished aggregate from screening and washing plant to mixer stockpiles - capacity 1250 tons per hour.
1935-09-15
2024-11-23 |
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This is a view looking down into the pumping plant pit. The main dam projects to the right. In the area now occupied by the revolver crane will set the twelve 65,000 horsepower pumps for irrigation. Their 14 foot diameter intake tubes are now...
2024-11-23
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