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results 1-20 of 123 item(s)  page 1 of 7 : ( <<  1  2  3  4  5  6  7  >> ) :: previous : next
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Construction of Gorge Powerhouse, showing generating units 21 and 22 (formerly units 1 and 2), January
1. Construction of Gorge Powerhouse, showing generating units 21 and 22 (formerly units 1 and 2), January 12, 1923
Tourists visiting Diablo Dam, ca. 1933
2. Tourists visiting Diablo Dam, ca. 1933
Construction site of the Gorge High Dam showing the old 1950 masonry dam to the right, August 2, 1956
3. Construction site of the Gorge High Dam showing the old 1950 masonry dam to the right, August 2, 1956
Harnischfeger bridge crane being placed in position during construction of the Diablo Powerhouse, May
4. Harnischfeger bridge crane being placed in position during construction of the Diablo Powerhouse, May 1935
Diablo Powerhouse interior showing metal reinforcement (rebar) which will hold up the generator pedestals,
5. Diablo Powerhouse interior showing metal reinforcement (rebar) which will hold up the generator pedestals, ca. 1935
Laying cement in the switchyard, where the transformers will be located, for the Diablo Powerhouse, May
6. Laying cement in the switchyard, where the transformers will be located, for the Diablo Powerhouse, May 1935
Relief valve piston, Diablo Powerhouse, April 1936
7. Relief valve piston, Diablo Powerhouse, April 1936
Diablo Powerhouse interior, showing construction of the generator, August 1936
8. Diablo Powerhouse interior, showing construction of the generator, August 1936
Setting the turbine runner in place, Diablo Powerhouse interior, May 5, 1936
9. Setting the turbine runner in place, Diablo Powerhouse interior, May 5, 1936
Setting a section of the generator stator in place, Diablo Powerhouse interior, May 28, 1936
10. Setting a section of the generator stator in place, Diablo Powerhouse interior, May 28, 1936
Conduit in floor slab of Diablo Powerhouse, April 1936
11. Conduit in floor slab of Diablo Powerhouse, April 1936
Turbine shaft and runner, Diablo Powerhouse, Skagit River, April 28, 1936
12. Turbine shaft and runner, Diablo Powerhouse, Skagit River, April 28, 1936
Diablo Powerhouse interior with generator scroll cases in place, Skagit River, October 28,1935
13. Diablo Powerhouse interior with generator scroll cases in place, Skagit River, October 28,1935
Diablo Powerhouse and camp, Reflector Bar, Skagit River, October 1, 1935
14. Diablo Powerhouse and camp, Reflector Bar, Skagit River, October 1, 1935
Gorge Powerhouse showing Mount Ross to the north, ca. 1930
15. Gorge Powerhouse showing Mount Ross to the north, ca. 1930
Whitman Mission grounds, Waiilatpu, Washington, n.d.
16. Whitman Mission grounds, Waiilatpu, Washington, n.d.
Maple Valley Grade School as an historic building, Maple Valley, ca. 1990
17. Maple Valley Grade School as an historic building, Maple Valley, ca. 1990
Inspection gallery form for Ruby Dam, June 27, 1939
18. Inspection gallery form for Ruby Dam, June 27, 1939
Area to be filled with second stage concrete above Ross Powerhouse, May 3, 1952
19. Area to be filled with second stage concrete above Ross Powerhouse, May 3, 1952
Truck crossing suspension bridge at Ruby Dam during initial construction, 1938
20. Truck crossing suspension bridge at Ruby Dam during initial construction, 1938
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