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976 - 1000 of 2123 Items << < 35 36 37 38 39 40 41 42 43 44 > >>
976 - 1000 of 2123 Items << < 35 36 37 38 39 40 41 42 43 44 > >>
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A 60-inch underground feeder for tributary conveyors in transportation of spoil from west side excavation.
1935-04-24
2024-11-26 |
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View of the west abutment from the east parking lot showing the discharge pipes, dam pumping plant and Coulee Dam.
1950-06-01
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Placing concrete footings for bents of high trestle in crevice on the east side.
1937-07-09
2024-11-26 |
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Timber plug between block 40, and steel cells in cofferdam section "G"; Preparing bedrock for block 39 in foreground - conveyor bridge in upper left.
1936-04-30
2024-11-26 |
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Downstream cross-river with all cribs in place
1936-12-11
2024-11-26 |
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Washington State Guard. Members, employees of the Bureau and the contractor, were given basic military training according to army standards, by experienced veteran officers.
1942-07-30
2024-11-26 |
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Excavation behind and removal of section "H" west cofferdam, for diversion of river next hear. Aggregate conveyor on the right.
1936-08-01
2024-11-26 |
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Part of the mechanism used in raising and lowering the drum gates, motor-driven worm gears on the stem of a butterfly valve which admits water from the reservoir to the chamber under a gate.
2024-11-26
2024-11-26 |
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View shows progress of P-1-Second Stage Phase two. Suction elbow installation to date. Contract 12r-18156. Contractors-Morrison Knudsen Company Inc. and Peter Kiewit Sons-Grand Coulee Dam, Columbia Basin Project.
1950-09-27
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Frozen dam across slide moving into deep crevice at about block 66.
1937-10-01
2024-11-26 |
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Excavating rock in bed of river. In the foreground is one of several large lava erratics in about the middle of spillway section.
1937-01-14
2024-11-26 |
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A pair of grouting pumps and stock of special cement.
1936-09-01
2024-11-26 |
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East side excavation, looking down on "Ice Dam" gorge - frozen retaining wall is between ice plant buildings and derrick in center foreground. East end of 1024 el. trestle at extreme right, Wakefield pile cofferdam at river edge, with downstream...
1936-10-01
2024-11-26 |
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Aggregate screening and washing plant at foot of Brett gravel pit. Columbia River in distance where is located a 19,500 g.p.m. pumping plant discharging to a 16-inch pipe leading to a 150,000 gallon surge tank seen in lower right hand corner. In...
1935-09-26
2024-11-26 |
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Excavation behind southeast corner of west cofferdam. Cross-river excavation trestle in operation.
1935-08-28
2024-11-26 |
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A gate body casting for the elevation 934 outlet works, ready for shipment to the dam. This casting weighs approximately 19-1/2 tons, and was manufactured by the Hardie-Tynes Co. Birmingham, Alabama.
1938-04-11
2024-11-26 |
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The inclined double-track, concrete transfer skip for lowering concrete from the elevation 1180 construction trestle to the left power house construction deck at elevation 1015. This structure clears the downstream face of the dam, and will not be...
1938-11-22
2024-11-26 |
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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
2024-11-26 |
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Bottom of "Smith Valley" crevice and south end of block 40. Bents for 1024 elevation trestle.
1936-07-29
2024-11-26 |
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Pile Trestle Bridge - looking east, 1/4 mile below axis of dam
1934-11-02
2024-11-26 |
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Here one of the 120 ton main unit penstock coaster gates is being moved from its erection platform in the west crane recess to its position on the dam." On this face (upstream) the endless roller chains are concealed behind the guard covering...
2024-11-26
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This night view of Westside operations during the winter of 1935-1936 shows little activity because of the intense cold. Sub-zero weather had caused sludge ice to lift up the surface river ice and freeze there until it was as deep as thirty feet...
2024-11-26
2024-11-26 |
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Erection in progress on a Colby hammerhead or double-cantilever gantry crane. This picture shows the completed framework of one crane, and erection started on a second unit.
1938-08-19
2024-11-26 |
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Jackhammer drills operating in foundation, east end of dam.
1937-07-23
2024-11-26 |
