Final Bedrock Excavation

Final bedrock clean-up near down-stream toe of dam.

1936-07-31
2024-11-25

Excavation behind West Cofferdam

Excavation behind and removal of section "H" west cofferdam, for diversion of river next hear. Aggregate conveyor on the right.

1936-08-01
2024-11-25

Excavation of Upstream Diversion Channel

Excavation in upstream end of diversion channel - behind sections "C" and "D" of west cofferdam.

1936-08-01
2024-11-25

Excavation of Upstream Diversion Channel

Excavating behind section "C" of west cofferdam for entrance of diverted river through four low blocks in west end of dam. Left foreground shows section of main 60-inch conveyor carrying material to spoil bank in Rattlesnake Canyon. In right...

1936-08-25
2024-11-25

Sharpening Drill Bits: Tempering Forge

Tempering forge in drill bit sharpening shed on west side ; maximum capacity 14,000 bits per day.

1905-04-19
2024-11-25

Sharpening Drill Bits: Forge and Sharpener

Oil-gas forge and air operated drill sharpener on west side.

1905-04-19
2024-11-25

Sharpening Drill Bits: Finished Product

Pile of re-sharpened drill steel in yard on east side.

1936-10-01
2024-11-25

Broken Spoil Conveyor

Break in 60-inch spoil conveyor crossing Columbia River, due to failure of timber pile support.

1936-02-29
2024-11-25

Depositing Spoil onto Conveyor

Athey 10-yard buggies dumping on grizzly over a feeder to 60-inch east side conveyor.

1936-08-28
2024-11-25

Excavation Spoil Conveyor

Excavation spoil conveyor on timber trestle crossing river to west main conveyor running to Rattlesnake Canyon dump pile.

1936-09-01
2024-11-25

Excavation Behind Wakefield Cofferdam

Excavation behind low Wakefield cofferdam. Shore-end of upstream cross-river coffer at left. Across the river are cells in section "D" of west cofferdam. Upper right is main soil conveyor to Rattlesnake canyon.

1936-09-14
2024-11-25

Excavation Behind East Side of Wakefield Cofferdam

Excavating on east side behind south end of Wakefield cofferdam. Material transported by 90-inch conveyors across river on trestle to main conveyor running to Rattlesnake Canyon.

1936-10-01
2024-11-25

Looking into "Ice Dam Gorge"

Looking northeasterly to block 69-A in Ice Dam gorge.

1936-12-03
2024-11-25

Acceptable Eastside Bedrock

Acceptable bedrock in east abutment; high placing trestle; low trestle on extreme left.

1936-12-03
2024-11-25

Excavation Behind Eastside Cofferdam

Excavating behind East cofferdam (elev. 965) Extreme left - upstream cross-river cofferdam under construction. Across river is part of cells in West cofferdam, section "D.

1936-12-01
2024-11-25

Deep Point of "Ice Dam" Gorge

Deep point in "Ice Dam" gorge in foreground - dam is between barge in pond and stairs leading down from ice plant. Across river is west cofferdam with the two ends partially removed.

1936-08-29
2024-11-25

Looking Down into "Ice Dam Gorge"

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
2024-11-25

Excavation in "Ice Dam Gorge"

Scaling at bottom of "Ice Dam" gorge.

1936-11-01
2024-11-25

North View of "Ice Dam Gorge"

Looking north along "Ice Dam" gorge, about row 69, elevation 775

1936-11-01
2024-11-25

South View of "Ice Dam Gorge"

South end of "Ice Dam" gorge ; frozen dam in upper right corner.

1936-11-12
2024-11-25

View of "Ice Dam Gorge"

"Ice Dam" gorge, frozen retaining wall in upper end.

1936-11-19
2024-11-25

East Side of "Ice Dam"

Looking through high trestle bents at ice dam in deep crevice on ease side.

1936-09-29
2024-11-25

Close Up of "Ice Dam"

Ice dam in deep gorge, upstream of east power house site blocks 67-69.

1936-12-03
2024-11-25

Side View Close Up of "Ice Dam"

Ice-dam gorge. Excavation down to elevation 761. Frozen dam to the left.

1936-12-03
2024-11-25

West Slide Movement

Surface movement in west slide area north of abutment.

1936-05-01
2024-11-25