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results 161-180 of 121458 item(s)  page 9 of 6073 : ( <<  1  2  3  4  5  6  7  8  9  10  >> ) :: previous : next
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Construction site, Masonry Dam, August 7, 1914
161. Construction site, Masonry Dam, August 7, 1914
Installing pipe in trench underneath the Black River, ca. 1899
162. Installing pipe in trench underneath the Black River, ca. 1899
Lake of the Wilderness, now known as Lake Wilderness in Maple Valley, ca. 1899
163. Lake of the Wilderness, now known as Lake Wilderness in Maple Valley, ca. 1899
Stone and Webster railway going under the Henry Thompson Bridge, Concrete, May 29, 1924
164. Stone and Webster railway going under the Henry Thompson Bridge, Concrete, May 29, 1924

Looking down main pressure tunnel from tunnel entrance, November 3, 1924
165. Looking down main pressure tunnel from tunnel entrance, November 3, 1924
Steam shovel, next to locomotive, removing earth from dam site, August 28, 1924
166. Steam shovel, next to locomotive, removing earth from dam site, August 28, 1924
Workers on powerhouse roof laying rebar, August 3, 1925
167. Workers on powerhouse roof laying rebar, August 3, 1925
Powerhouse interior showing generating unit no. 2, August 13, 1925
168. Powerhouse interior showing generating unit no. 2, August 13, 1925

Marion steam shovel filling dump car with dirt at tunnel excavation, February 8, 1911
169. Marion steam shovel filling dump car with dirt at tunnel excavation, February 8, 1911
Workers on the roof of the powerhouse laying rebar, August 3, 1925
170. Workers on the roof of the powerhouse laying rebar, August 3, 1925
Reinforcing mat and rock formation that will be below the no. 1 generating unit in the powerhouse, May
171. Reinforcing mat and rock formation that will be below the no. 1 generating unit in the powerhouse, May 8, 1925
Masonry Dam under construction, June 13, 1913
172. Masonry Dam under construction, June 13, 1913

Man standing in concrete-lined tunnel between dam and the four penstocks going to the powerhouse, October
173. Man standing in concrete-lined tunnel between dam and the four penstocks going to the powerhouse, October 22, 1925
Powerhouse foundation, showing draft tubes for generating units, May 12, 1925
174. Powerhouse foundation, showing draft tubes for generating units, May 12, 1925
Powerhouse after dam completion, October 20, 1925
175. Powerhouse after dam completion, October 20, 1925
South side of powerhouse, nearly complete, September 21, 1925
176. South side of powerhouse, nearly complete, September 21, 1925

Dam site and diversion tunnel entrance as viewed from bridge north of site, October 7, 1924
177. Dam site and diversion tunnel entrance as viewed from bridge north of site, October 7, 1924
Construction workers at tunnel entrance, ca. 1900
178. Construction workers at tunnel entrance, ca. 1900
Wrought-iron penstock parts being delivered by rail, 1900
179. Wrought-iron penstock parts being delivered by rail, 1900
Snoqualmie Falls transformer house interior, 1910
180. Snoqualmie Falls transformer house interior, 1910
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results 161-180 of 121458 item(s)  page 9 of 6073 : ( <<  1  2  3  4  5  6  7  8  9  10  >> ) :: previous : next
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