Powerhouse construction--West Powerhouse

West Powerhouse from Car Skip

1940-04-10

Powerhouse construction--concrete placement in powerhouse

Men working inside powerhouse

1939-01-20

Spillway and drum gate construction--eastern spillway arch

Close up view of men working on eastern spillway arch.

1941-07-15

Spillway and drum gate construction--concrete placing

Concrete placing in twist slot

1941-10-15

Installation of turbines and generators--placing scroll case

Placing scroll case section L1 W. powerhouse

1941-08-21

Equipment for construction, transportation, and maintenance--Grant pumps

Grant pumps and grant building

1941-01-29

Riverbanks and slope protection--interior of caisson drydock

Interior of caisson drydock showing rock that is being placed in bottom. Sand will be placed on top of rock and reinforced concrete atop the sand. The four piers form the resting place for the caisson

1944-11-29

Site preparation-- breaking rock [03]

View of men breaking up rock for excavation operations.

2024-04-25

Site preparation-- structures along bank

View from of excavation taken from across the river. Structures visible in the foreground.

1934-04-02

Powerhouse construction--transformer deck

Transformer deck at East Powerhouse

1941-12-29

Powerhouse construction--construction of the R-1 scroll case

Progress view of the stage of construction on the R-1 scroll case.

1948-08-17

Spillway and drum gate construction--view of the spillway section [01]

View of the spillway section from the left bank

1941-03-31

Spillway and drum gate construction--drum gate #1 [04]

Men work on drum gate number one

1940-12-07

Spillway and drum gate construction--spillway section [01]

Spillway Section--downstream face

1940-10-24

Installation of turbines and generators--man wipes wicket gates [02]

Huge wicket gates stored on generator deck is wiped off by H.R. Ramm, U.S.B.R. foreman.

1947-06-28

Installation of turbines and generators--L-7 generator spider

The spider for the L-7 generator, after being heated to cause it to expand, is being lowered onto its shaft. It is partially covered with canvas to keep it warm until it is in place.

1947-06-27

Installation of turbines and generators--interior of powerhouse

A view of the east end of the left powerhouse, with turbine pit No. 6 in the immediate foreground

1942-11-28

Equipment for construction, transportation, and maintenance--air compressors

air compressors in power house

1941-09-10

Scale models, testing, and oddities--concrete in turbine

96 pound block of concrete found in unit L-4 turbine runner, 3-20-44. The 7/8"" diameter hole in the foreground appears to have been an anchor bolt hole. Rectangular dimensions are 17"" x 11"" while wedge side dimensions are 17"" x 10"" x3""

1944-03-20

Equipment failures--failure of L-3 turbine [02]

Failure of L-3 Turbine. Note: deflector plate on top of runner and the one deflector plate that was left in original position. Also scored condition of runner top rib

1945-06-15

Equipment failures--failure of L-3 turbine [01]

Failure of L-3 Turbine. Note: deflector plates wedged between crown plate and runner looking east by south-east

1945-06-15

Equipment failures--repairs to L-3

Repairs to L-3 packing box. Boring arm making second cut.

1942-11-25

Scale models, testing, and oddities--concrete specimens submerged

View of concrete specimens being tested for resistance to sulfate waters in ponds at elevation 1930 southwest of the 230-Kv switchyard at Coulee Dam. View shows cylinders, bars, and posts from test batches 48-72 setting in original alkali pond...

1949-11-18

Riverbanks and slope protection--man stands next to armor rock

First placement of granite armor rock at the downriver end of section ""A."" Note the size of the rock in comparison to the man; armor rock weighing over 10 tons has been placed. This rock is obtained from the upriver quarry under work performed...

1949-04-26

Equipment failures--painted surface of wicket gate

Painted surface of wicket gate--Turbine L-2. This view is representative of the painted surface on the outer face of the wicket gates and shows the alligatoring of the paint along the trailing edge.

1942-07-13