Diversion Slot

A 50-ft. wide diversion slot between high blocks in west power house area.

1937-05-01
2024-05-13

page 239

Land irrigable under existing works- -Wenatchee River Basin Acres Irrigation development Irrigated (1943) Additional irrigable Total Wenatchee reclamation district 11, 206 1, 000 12, 206 Pioneer Water Users Association 1, 054 0 1,...

Visitors to Dam site for National Airmail Week, May 19, 1938

Album leaf 330, 5/19/38<br><br>Man second from the right is Frank A. Banks<br><br>PH Coll 238.330

2024-05-13

Mason City Hospital

Contractor's hospital building in Mason City

1935-03-02
2024-05-13

Parabolic Arches

The parabolic arches of the dam bridge have a clear span of 135 feet and a rise of 17.25 feet. Each arch barrel varies in thickness from 3 feet at the abutments to 18 inches at the crown, and is 30 feet 2 inches wide." When these arches were...

2024-05-13

Governor Clarence D. Martin's One Hour of Work

Governor Clarence D. Martin, in a ceremony attended by many state notables and government officials, dumped a bucket of concrete for the first official pour on Dec. 06, 1935. Governor Martin is the man striding along the right side of the pile of...

1935-12-06
2024-05-13

Site preparation-- excavation operations [01]

General view of excavation operations along bank

1936-11-01

Powerhouse construction--Penstock liner

East side of Penstock liner. Man inside liner gives scale.

1940-01-10

Spillway and drum gate construction--west side downstream view of spillway

View of a portion of the spillway section showing formwork and false work for construction of spillway bridge spans. The construction trestle appears below the formwork. Eight of the 102-inch outlet tubes are shown in use for diversion of the...

1941-08-21

Spillway and drum gate construction--view of the spillway section [03]

View of the spillway section from the right bank

1941-03-03

Spillway and drum gate construction--drum gate #1 [02]

Installation of main girders for drum gate

1940-12-05

Spillway and drum gate construction--drum gate installation

Steel and Form work for drum gate installation. Steel is for spillway crest, bridge piers, and drum gate chamber

1940-06-21

Installation of turbines and generators--riveting crew at work

Riveting together the sections of the #1 Shasta turbine scroll case in pit 7. On the left is the heater. In the center, a man is bouncing a heated rivet to knock off the oxidized scale and on the right are the riveters waiting for the rivet.

1942-02-23

Scale models, testing, and oddities--Grand Coulee [02]

Scale model of Grand Coulee Dam

2024-05-13

Installation of turbines and generators--shaft for Shasta generator being lifted

Shaft for Shasta generator being lifted preparatory to seating upright in operating position for construction of rotor

1942-07-15

Equipment for construction, transportation, and maintenance--reboring drum gate grirder

Reboring drum gate girder. Machine shop--powerhouse

1941-01-22

Fish Ladder Approach Trestle

Construction in progress on approach trestle to the middle fish trap at Rock Island Dam. This work was under Specifications No. 795 and contract with Kern and Kibbe.

1938-12-22
2024-05-13

Closure Gates in Place

Wooden closure-gates in place, blocking off diversion slots.

1937-10-29
2024-05-13

Mason City Recreational facilities.

Contractor's Recreation Hall housing pool and card tables, beer bar, lunch counter, stage company's office, barber shop, and shoe repair shop.

1935-03-02
2024-05-13

Mason City

Mason City across the river - Government Camp in foreground.

1934-12-01
2024-05-13

Site preparation-- dump truck

Close up view of a dump truck dumping material during excavation operations.

2024-05-13

Powerhouse construction--powerhouse equipment

Close up view of unidentified equipment

1940-09-09

Powerhouse construction--station service from balcony

The two 14,000 h.p. station-service turbines at the left powerhouse are embedded in concrete to elevation 951, the generator floor level.

1940-08-01

Powerhouse construction--reinforcing steel in powerhouse

General view of reinforcing steel at East Powerhouse base

1940-10-07

Spillway and drum gate construction--view of the spillway section [04]

View of the spillway section from the left bank

1941-02-05