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results 41-60 of 15041 item(s)  page 3 of 753 : ( <<  1  2  3  4  5  6  7  8  9  10  >> ) :: previous : next
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Excavation for foundation of dam, with cofferdam visible, October 7, 1924
41. Excavation for foundation of dam, with cofferdam visible, October 7, 1924
Remaining portion of partially destroyed cofferdam after a flood, November 19, 1924
42. Remaining portion of partially destroyed cofferdam after a flood, November 19, 1924
Southern face of dam, showing excavation for east abutment on the right side, September 12, 1925
43. Southern face of dam, showing excavation for east abutment on the right side, September 12, 1925
Men and steam shovel working on powerhouse site excavation, April 26, 1925
44. Men and steam shovel working on powerhouse site excavation, April 26, 1925
Looking down main pressure tunnel from tunnel entrance, November 3, 1924
45. Looking down main pressure tunnel from tunnel entrance, November 3, 1924
Dam site showing chutes for carrying concrete, October 1, 1924
46. Dam site showing chutes for carrying concrete, October 1, 1924
Building cofferdam in preparation for building Lower Baker River Dam, August 28, 1924
47. Building cofferdam in preparation for building Lower Baker River Dam, August 28, 1924
Dam construction after Baker River was blocked off by upper cofferdam, August 28, 1924
48. Dam construction after Baker River was blocked off by upper cofferdam, August 28, 1924
Hoist used for hauling gravel up slope next to the dam site, August 28, 1924
49. Hoist used for hauling gravel up slope next to the dam site, August 28, 1924
Steam shovel, next to locomotive, removing earth from dam site, August 28, 1924
50. Steam shovel, next to locomotive, removing earth from dam site, August 28, 1924
Man standing in completed penstock tunnel between dam and powerhouse, October 22, 1925
51. Man standing in completed penstock tunnel between dam and powerhouse, October 22, 1925
Forms for the creation of the main tunnel, in the center of the tunnel system, May 7, 1925
52. Forms for the creation of the main tunnel, in the center of the tunnel system, May 7, 1925
Draft tube that will go under one of the powerhouse water wheels, pictured after delivery in town next
53. Draft tube that will go under one of the powerhouse water wheels, pictured after delivery in town next to the warehouse, February 7, 1925
Workers on powerhouse roof laying rebar, August 3, 1925
54. Workers on powerhouse roof laying rebar, August 3, 1925
Form for water wheel draft tube, after delivery to Concrete, March 20, 1925
55. Form for water wheel draft tube, after delivery to Concrete, March 20, 1925
South face of dam under construction, February 27, 1925
56. South face of dam under construction, February 27, 1925
Excavation for powerhouse foundation, March 6, 1925
57. Excavation for powerhouse foundation, March 6, 1925
Generating units 1 and 2 installed in the powerhouse, August 26, 1925
58. Generating units 1 and 2 installed in the powerhouse, August 26, 1925
Powerhouse interior showing generating unit no. 2, August 13, 1925
59. Powerhouse interior showing generating unit no. 2, August 13, 1925
Powerhouse under construction, June 29, 1925
60. Powerhouse under construction, June 29, 1925
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