Browse by Archive
Washington State University Libraries
|
An interior view of one of the 12 pumping plant discharge tunnels. At this section, the tunnel is 17 feet in diameter and with the exception of final trim and cleanup, all work has been completed.
1939-03-24
2024-11-24 |
|
Small dump trucks were used to haul out the muck during the driving of the pumping plant discharge tunnels. The workman standing alongside the discharge chute operates the air ram which closes the gate when a load of muck has been placed on the...
1939-02-22
2024-11-24 |
|
The finished outlet portal of one of the 12 pumping plant discharge tunnels.
1939-02-08
2024-11-24 |
|
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
2024-11-24 |
|
An aerial view of the pumping plant foundation excavation early in 1939. The bench in front of the discharge tunnels has been partially excavated to the final grade, elevation 1163.
1939-04-01
2024-11-24 |
|
Condition of the cofferdam island downstream from the dam prior to excavation and removal, under Extra Work Order No. 5. Jan. 1939
1939-01-01
2024-11-24 |
|
Equipment at work on removal of the old cofferdam island downstream from the spillway section of the dam. This job involved the pulling of steel piling, removal of timber cribs, drilling and blasting of concrete, and excavation of earth and rock...
1939-02-06
2024-11-24 |
|
The contractor used a dragline to excavate a channel through the right tailrace peninsula.
1939-01-30
2024-11-24 |
|
Open pit mining in progress at the Brett gravel pit. This is the elevation 1650 level which Consolidated Builders mined during 1939, and where they found sufficient aggregate for all concrete production requirements.
1939-02-27
2024-11-24 |
|
To mine raw aggregate from the Brett gravel pit, the contractor used a 7-yard electric shovel to load the material onto a conveyor belt while a dragline above loosened the sand and gravel from the face of the cut.
1939-03-09
2024-11-24 |
|
Oversize rock and gravel mined at the Brett gravel pit is reduced to 10 inches maximum size in this 56" x 72" Buchanan jaw crusher.
1939-05-24
2024-11-24 |
|
The contractor's aggregate processing plant where sand and gravel is washed and screened into the proper sizes. The large stockpile is the surplus sand mined at the Brett pit and wasted at this point.
1939-06-01
2024-11-24 |
|
Hydraulic jets wash the gravel as it is screened into the proper sizes at the aggregate processing plant. On several occasions the plant processed material at the rate of 4,.000 tons per hour.
1939-11-03
2024-11-24 |
|
Two belt conveyors were used to lift the aggregate up into the mixing plant storage bins as required for the concrete manufacturing operations. The stockpiles have a maximum capacity of about 138,000 cubic yards.
1939-06-01
2024-11-24 |
|
At the controls of the concrete mixing plant. On the chart is recorded the weight of sand, gravel, cement, and water that makes up each batch of concrete. The chart also shows which of the four mixers below received the batch of aggregate, cement,...
1939-11-02
2024-11-24 |
|
An aggregate batcher and its automatic cut-off scale for weighing a batch of aggregate. The scale may be set for a number of different weights, any of which may be used at the option of the operator. However, the weight of particular aggregate is...
1938-12-28
2024-11-24 |
|
Automatic timer and locking device for controlling the operations of the mixers. The 4-yard mixers cannot discharge a batch of concrete until they have run the required time (usually 2 minutes) as set on the timer for each mixer. Should the...
1938-12-28
2024-11-24 |
|
Koehring 4-yard concrete mixer of the tilting drum type. The mixing plant contains 8 of these mixers in two batteries of 4 each.
1938-12-28
2024-11-24 |
|
A Concrete train and its operator roll under the mixing plant discharge spout to receive concrete. Each bucket on the car holds 4 cubic yards; four buckets will be filled, and the train will then roll out onto the trestle to wherever the concrete...
1938-12-30
2024-11-24 |
|
The Fuller-Kinyon remote-control unloader used for removing bulk cement from boxcars at the cement blending storage plant.
1938-12-30
2024-11-24 |
|
Steel silos used for storing bulk cement is blown through a long pipeline to the storage bins at the mixing plant.
1939-06-30
2024-11-24 |
|
Concrete placing in progress at the downstream end of a low block in the spillway section of the dam.
1939-08-09
2024-11-24 |
|
Typical transverse construction joint showing gallery openings at elevation 1,100 and 1,150.
1939-11-14
2024-11-24 |
|
Formwork and reinforcement steel for the grouting and drainage gallery along the right abutment of the dam.
1939-09-19
2024-11-24 |
