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81
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81.
Excavation in the Glory Hole at the Ruby Dam site, 1938
82.
Diablo Powerhouse interior showing metal reinforcement (rebar) which will hold up the generator pedestals, ca. 1935
83.
Massachusetts Street Substation interior showing transformers, Seattle, May 14, 1904
84.
Left bank with engineering notes showing plans to raise the height of Ross Dam, September 14, 1944
85.
Men at entrance to concrete tunnel at Masonry Dam, April 7, 1913
86.
North facade of Newhalem powerhouse with tailrace on the right, July 1987
87.
Sawmill in operation on Lake Tapps, February 16, 1911
88.
Powerhouse construction site with views of penstock lines, camp no. 9, and superintendent's house, April 18, 1904
89.
Full view of Ross Dam, July 1987
90.
Diablo Dam incline railway powerhouse, at top of incline on Sourdough Mountain, July 1989
91.
Gorge Inn, formerly the mess hall for the Skagit Hydroelectric Project employees, Newhalem, July 1989
92.
Workers laying stringers on trestle, August 4, 1903
93.
Hydraulic mule used to open taintor gates on Diablo Dam, July 1989
94.
Butterfly valve control, manufactured by the Pelton Water Wheel Company in 1931, Diablo Powerhouse, July 1989
95.
Communications room, Diablo Powerhouse, July 1989
96.
Upper Cedar Falls, March 17, 1914
97.
Spillway no. 1 at the flume, December 31, 1903
98.
Turbine pit, Diablo Powerhouse, July 1989
99.
Men working on pile drivers, May 30, 1903
100.
Setting a section of the generator stator in place, Diablo Powerhouse interior, May 28, 1936
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