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451 - 475 of 2123 Items << < 14 15 16 17 18 19 20 21 22 23 > >>
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Waterfalls in the process of formation. The flow of surplus water was shifted from the outlet tunnels to the drum gates in the presence of visitors estimated at 15,000, during a coast-wide broadcast.
1942-06-01
2024-11-22 |
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From the control room desk at the left, power plant operators have telephone connections with all parts of the dam and powerhouse, and long distance outlets through the local Bell telephone system, also facilities for communicating with other...
1942-07-08
2024-11-22 |
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Lake elevation indicating instrument, located on the drum gate control cubicle, in the Control Room. The reservoir was filling rapidly when the picture was taken (May 28th at about 3:00pm).
1942-05-28
2024-11-22 |
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A 70-ton all-steel closure gate is completed and lowered to a transfer barge. It will be used to close river diversion channels while they are built up. On the dam, fabrication of another gate is in progress.
1938-09-23
2024-11-22 |
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At Consolidated Builders' sand classifier plant, the Toledo scale, with chronoflow recording attachment, weighs the quantity of sand produced. Each of the three scales is attached to a conveyor belt which carries sand of one size range.
1938-08-26
2024-11-22 |
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Sump from cofferdam with outlet pipes and spillway. North end of block 40 at the left, and cluster "G" to the right.
1937-04-01
2024-11-22 |
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The downstream side of a 70-ton closure gate, and a gate guide frame. The contractor ordered eight gates and nine frames. They were fabricated by Pacific Car & Foundry Co. and assembled on the dam.
1938-08-04
2024-11-22 |
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The Dorr hydro-separator installation at the contractor's sand classifier plant.
1938-08-26
2024-11-22 |
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U.S.B.R. Federal Guard patrol boat "Wellpinit" on the reservoir.
1942-05-28
2024-11-22 |
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At the contractor's sand classifier and dewaterer discharges the sand fraction to a conveyor belt.
1938-08-26
2024-11-22 |
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Lower crib-type cofferdam under construction from section "G" to east river bank. Aggregate conveyor on suspension bridge shown overhead, and center tower to the left.
1937-01-06
2024-11-22 |
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Unloading cement to storage silos with Fuller-Kinyon pump. Box-cars average 240 barrels each.
1936-06-01
2024-11-22 |
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Control panels for L-2 generator in the governor gallery, at El. 951. The board at the left controls the generator and auxiliary equipment. The cabinet at the right contains the turbine governor and its controls.
1942-01-20
2024-11-22 |
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Mining raw aggregate at the Brett Gravel Pit with power shovel and conveyor system.
1938-03-16
2024-11-22 |
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Trestle cranes Nos. 1 to 4, inclusive. Altogether, there are ten cranes on the 1180 elevation construction trestle.
1938-08-22
2024-11-22 |
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Distant view of dam and coffers, looking west from east shore.
1937-04-17
2024-11-22 |
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Cement storage and blending plant - storage capacity 55,000 barrels; air compressor plant in the rear.
1936-06-01
2024-11-22 |
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Turbine pits in west power house substructure. Elevation of 950 diversion blocks. 24-ft.-diameter main-unit penstock blackouts; and 12-ft.-diameter station-service unit blockouts in lower right corner.
1937-04-29
2024-11-22 |
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This is a view in a 950 elevation gate chamber, showing the method of installing and removing the 16 ton crane beams from the ceiling during maintenance operations on the gates. The upper head or ring of the hoist car is raised by hydraulic...
2024-11-22
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The first 18 ft. diameter penstock liner sections are installed at Grand Coulee Dam. These are the upstream bulkhead sections No. 1-2.
1938-10-26
2024-11-22 |
