Scale models, testing, and oddities--concrete testing

Test of form stripping. Re: stains on concrete

1940-03-02

Scale models, testing, and oddities--""concor"" drill rig

Man tests concrete specimens

1938-03-08

Scale models, testing, and oddities--sample core

Sample core of Grant

2024-12-04

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

Sample core of Grant; showing seam

2024-12-04

Equipment for construction, transportation, and maintenance--transporting a rotor shaft

Due to lack of proper transportation equipment, difficulty was encountered in taking the R-1 rotor shaft across the spillway roadway of the dam. In order to distribute the load safely, it was necessary for this truck boom to hook onto the trailer...

1948-07-21

Scale models, testing, and oddities--drill core sample

Drill core sample against white background

2024-12-04

Scale models, testing, and oddities--multiple grant seams in drill core

Multiple grant seams in drill core

2024-12-04

Scale models, testing, and oddities--weld test

Weld test

1940-03-16

Scale models, testing, and oddities--dam testing

An unidentified man testing electrical.

1938-02-01

Scale models, testing, and oddities--concrete drying

View of concrete drying(?)

1938-01-04

Scale models, testing, and oddities--piezometer test apparatus

North Coulee Dam, Piezometer Terminal Well, A view of the piezometer test apparatus at the corner of the upstream and right walls of the well. The pore pressure in the dam embankment and foundation are transmitted through the water-filled tubes...

1950-10-24

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--gauging offsets between concreet units

Close up view of a man gauging offsets between concrete units

1938-02-01

Scale models, testing, and oddities--offset between parts

Main unit stop-log guide showing offsets between parts 1 and 2 of drawing 222-D-2204 at elevation 1025.8

1939-03-31

Equipment for construction, transportation, and maintenance--transporting R-1 scroll case

Placing for R-1 scroll case on the trailer in the Electric City yards preparatory to transporting it to the East powerhouse. July 16, 1948

1948-07-16

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

Scale models, testing, and oddities--Miss Coulee propeller

View of the propeller of the Miss Coulee displayed on a pedestal

1941-08-05

Scale models, testing, and oddities--strange rock formations [02]

Close up view of strange rock formations

1938-11-02

Scale models, testing, and oddities--strange rock formation [01]

Close up view of a strange rock formation

1944-06-03

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

Installation of turbines and generators--placing scroll case

Placing scroll case section L1 W. powerhouse

1941-08-21

Installation of turbines and generators--installation of scroll case

The 190-ton scroll case for 103,000 horsepower Allis-Chalmers hydro turbine unit being installed in the west powerhouse at Grand Coulee Dam. This unit consists of several radial and on straight section of welded plate steel riveted with double...

1942-07-11

Installation of turbines and generators--scroll case in place

View of pit 6 showing scroll case in place. Photo taken from crane

1943-02-15

Installation of turbines and generators--placing the last section of the scroll case

Placing the last section of the scroll case for L-7 turbine.

1947-03-10

Installation of turbines and generators--workers install scrollcase

Bureau workmen Stretching bolts on scroll case in east powerhouse at Grand Coulee Dam, Left to right; Walt Scott and Robert Bush

1950-11-09