Results
601 - 625 of 2123 Items << < 20 21 22 23 24 25 26 27 28 29 > >>
601 - 625 of 2123 Items << < 20 21 22 23 24 25 26 27 28 29 > >>
|
Preparing to build east pier for highway bridge below dam site.
1935-05-24
2024-05-17 |
|
This is a diamond drill rig in operation. A compressed-air motor rapidly spins the hollow shaft, down which water is forced to cool the bit, and carry away the cuttings. The core specimen rises in the hollow drill stem as the bit cuts downward....
2024-05-17
|
|
Excavation behind west cofferdam and erection of central tower for aggregate conveyor suspension bridge to westmix.
1935-09-02
2024-05-17 |
|
Excavation on the west side. Trestle and catwalk in the distance.
1935-01-30
2024-05-17 |
|
In the foreground are two finished hemispherical bulkheads, while in the background another set is being prepared for the water-pressure test. These bulkheads were used to close the upper end of the turbine penstocks until the unit coaster gates...
2024-05-17
|
|
Base of center tower of suspension bridge, in cell 5 in section "G" of Westside cofferdam.
1937-11-18
2024-05-17 |
|
Two Trommel scalping screens, 6 feet by 22 feet, between raw stockpile and balancing pile at Brett gravel pit.
1935-09-01
2024-05-17 |
|
Conveyor stacker discharging to spoil pile in Rattlesnake Canyon - maximum rate about one ton per second.
1935-09-19
2024-05-17 |
|
The upstream side of a 70-ton closure gate used for river diversion purposes. The lower enclosed section of the gate was made into water tight compartments
1938-08-04
2024-05-17 |
|
Two 2,500 c.f.m. air compressors at the cement plant.
1935-10-16
2024-05-17 |
|
It is believed that this installation at Grand Coulee Dam is the first where a cylinder hoist has been used for a gate having the same general functions. Gates of similar design are being installed at Shasta Dam also.' This main unit coaster...
2024-05-17
|
|
The elevation 1024 construction trestle, used by the M.W.A.K. Company, was dismantled by the new contractor.
1938-05-10
2024-05-17 |
|
The two camps at the dam site. In the foreground is the "Coulee Dam" the Government Camp; and across the river is "Mason City" the contractor's camp.
1936-08-26
2024-05-17 |
|
Ten 5,000 barrel steel silos of the cement storage and blending plant - air compressor plant at the left.
1935-09-26
2024-05-17 |
|
Five-yard shovel loading a 15-yard buggy in west tailrace area.
1935-06-24
2024-05-17 |
|
Drilling weathered rock at top of foundation, east end of dam.
2024-04-17
2024-05-17 |
|
Placing timber cribs in east end of upstream cross-river cofferdam. Abutment of west end of coffer is steel cell in west cofferdam shown to the left.
1936-09-09
2024-05-17 |
|
Sand dewatering rakes at aggregate processing plant, Brett pit.
1935-09-03
2024-05-17 |
|
Seventy-five ton trailer truck moving a 300 horsepower boiler.
1935-05-27
2024-05-17 |
|
36-inch Glyx drill hole in west bedrock.
1935-09-25
2024-05-17 |
