Powerhouse construction--lowering tube

Lowering tube for placement in outlet works at elevation 1137.

1940-01-02

Coulee Dam irrigation pumping plant and discharge pipes--aerial view of the pumping plant

Aerial view looking into the upper end of the 12 pumping plant discharge pipe tunnels. Just beyond the tunnel mouths is the pumping plant. The upper combined bends for discharge pipes Nos. 1 and 2 are in position at the bottom of the picture.

1949-06-15

Spillway and drum gate construction--cleaning east powerhouse area

Men and machines clean up debris from powerhouse area. Dam is in the background.

1941-12-29

Powerhouse construction--installing reinforcing steel

Feeder Canal. Specs. 2586. J.A. Terteling and Sons Inc., Contractors. This photograph was taken on the extreme west end of the Electric City Storage Yard. The sub-contractor, the Steel Construction Co., who have the contract with J.A. Terteling...

1949-08-16

Powerhouse construction--powerhouse bays

Bays 1-2 and 3 in East Powerhouse.

1942-02-23

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--men work on drum gate

Men stand on girder during drum gate construction

1941-01-21

Spillway and drum gate construction--aligning drum gate hinges [02]

Men align drum gate hinges

1940-11-30

Spillway and drum gate construction--aerial veiw of Grand Coulee construction

Aerial view of construction of Grand Coulee Dam

1940-06-03

Construction of pipelines, syphons and tunnels--erecting forms

Feeder Canal. This photograph was taken at about station 75+15 in the invert of the outlet open transition of the cut-and-cover looking east at the downstream end of the barrel section. The contractor is erecting forms, and placing reinforcing...

1950-05-26

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

Chinook migrants

Chinook migrants in dividing box near the end of Dryden Ditch

1940-07-14

Installation of turbines and generators--lowering tubine

Col. Basin Proj., Grand Coulee Dam.--Lowering the turbine runner for the No. 1 Shasta Dam generator, of 75,000 kw. Capacity, moved to Grand Coulee Dam with another machine of like size to expedite delivery of new power to Pacific Coast war...

1942-10-15

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

Scale models, testing, and oddities--bolts in concrete wall

A close up view of bolts in a concrete wall

1938-02-01

Scale models, testing, and oddities--grant seam in core

Sample core of Grant; showing seam

2024-11-22

Scale models, testing, and oddities--concrete inspection [01]

Govt. inspector filling cylinder with concrete sample at a plant for compression braking test

1940-07-26

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

air compressors in power house

1941-09-10

Equipment for construction, transportation, and maintenance--gear system for moving crane

Gear system used in moving large crane on top of dam. These gears are connected to wheels resting on track that extends entirely across dam.

1942-05-22

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

Equipment failures--thrust bearing discs for unit L-3

View of eight thrust bearing discs for unit L-3. The discs are laying upside down to indicate worn spots in the centers where the jack screws had made contact. The depth of these holes varied from 0.005"" to 0.007"" Grand Coulee Power...

1945-10-22

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

Monahan Creek falls

Master scanned with Epson 1640XL at 800 dpi. Image manipulated with Adobe Photoshop 7.0.

1937-05-23

Cedar Creek dam and falls

Power diversion, old mill, diversion return and fish-ladder at Cedar Creek dam and falls at Hall, Washington
Dam and falls only partly showing upstream
Fish-ladder leads into diversion

1937-08-06