Bedrock Revealed in Excavation of West Side Cofferdam

Bedrock on West Side.

1935-09-26
2024-11-25

Excavation for West Side Cofferdam

Excavation on the west side. Trestle and catwalk in the distance.

1935-01-30
2024-11-25

Excavation Enclosed by West Side Cofferdam

Excavation activities, including conveyors, in south-east section of area enclosed by the west cofferdam.

1935-03-20
2024-11-25

Excavation Feeding Conveyor

Athey 10-yard buggy and Caterpillar bulldozer feeding a tributary conveyor feeder.

1935-03-21
2024-11-25

Construction Equipment at Grand Coulee Dam

Rebuilt 25-yard Woolridge buggy 16 wheels, and Caterpillar 75 tractor, working on the west side

1935-01-03
2024-11-25

Trailer loaded with Boiler

Seventy-five ton trailer truck moving a 300 horsepower boiler.

1935-05-27
2024-11-25

Excavation on West Bank of Columbia

Five-yard shovel loading a 15-yard buggy in west tailrace area.

1935-06-24
2024-11-25

Excavation Behind West Side Cofferdam

Excavation behind southeast corner of west cofferdam. Cross-river excavation trestle in operation.

1935-08-28
2024-11-25

Excavation on East Bank of Columbia River

Excavation equipment on the east side.

1935-08-01
2024-11-25

Excavation Behind West Side Cofferdam

Excavation behind west cofferdam and erection of central tower for aggregate conveyor suspension bridge to westmix.

1935-09-02
2024-11-25

Underground Feeder for Tributary Conveyors

A 60-inch underground feeder for tributary conveyors in transportation of spoil from west side excavation.

1935-04-24
2024-11-25

Excavation of Dam Site

A 25-yard rebuilt Woolridge buggy ready to dump on grizzly of tributary conveyor feeder.

1935-03-21
2024-11-25

Excavation Conveyor System

Grand Coulee Dam-Excavation Conveyor System

2024-11-25

Feeding Conveyor System

Train of two Athey 10-yard buggies and Caterpillar tractor feeding a tributary conveyor feeder.

1935-03-21
2024-11-25

Conveyor Carrying Off Spoil

Upper end of 60-inch spoil conveyor, showing discharge to dump in Rattle Snake Canyon.

1935-09-20
2024-11-25

Section of Conveyor

Extensible section of the 60-inch excavation conveyor.

1935-05-01
2024-11-25

Conveyor Depositing Debris in Rattle Snake Canyon

Conveyor stacker discharging to spoil pile in Rattlesnake Canyon - maximum rate about one ton per second.

1935-09-19
2024-11-25

Stacker Unit of Excavation Conveyor

Stacker unit of 60-inch excavation conveyor - capacity 60,000 cubic yards per day.

1935-03-18
2024-11-25

Damage to Conveyor System

Slip of excavated material in Rattlesnake spoil pile, damaging stacker unit of conveyor system.

1935-03-30
2024-11-25

Rattlesnake Canyon

Rattlesnake Canyon, one mile from dam site - site for spoil pile of west excavation material.

1935-01-01
2024-11-25

Spoil Pile in Rattlesnake Canyon

A branch of excavation spoil pile in Rattlesnake Canyon at water edge, in Columbia River.

1935-09-01
2024-11-25

Land Slide on West Bank

A recurring earth movement in west slide area.

1935-08-02
2024-11-25

Electric Shovel Handling Rock

Five-yard electric shovel handling rock near west abutment.

1935-05-20
2024-11-25

First Bedrock Exposed on West Bank of Columbia River.

First bedrock exposed in excavation on west side, along tailrace.

1935-07-24
2024-11-25

West Excavation Area

Lift seam in west excavation area.

1935-09-27
2024-11-25