Category:Bridges across canyons in Nevada

Subcategories

This category has only the following subcategory.

Media in category "Bridges across canyons in Nevada"

The following 10 files are in this category, out of 10 total.

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  Catwalk spanning canyon over upstream cofferdam. The span is swung approximately between Triangulation Points C-7... - NARA - 293946.jpg 3,000 × 2,122; 872 KB
  
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  Dam site and structure as seen from point on Arizona rim roughly defined by coordinate point N31,000, W 48,700. View... - NARA - 293951.jpg 2,109 × 3,000; 1.02 MB
  
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  "Looking into Black Canyon at Nevada Diversion Tunnel intake portals from top of canyon wall on Arizona side. Trash... - NARA - 293671.jpg 3,000 × 2,101; 3.71 MB
  
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  "Looking upstream into Black Canyon toward Hoover Damsite from point on Six Companies Construction road on Nevada side." - NARA - 293720.jpg 3,000 × 2,095; 3.78 MB
  
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  Drillers and scalers at work in intake tower locations on Nevada side. Note five-yard dragline excavator in upper... - NARA - 293760.jpg 2,094 × 3,000; 916 KB
  
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  Looking upstream into Black Canyon toward Hoover Dam site showing outlet portals of four diversion tunnels and... - NARA - 293789.jpg 3,000 × 2,103; 909 KB
  
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  Looking upstream into Black Canyon toward Hoover damsite showing four diversion tunnel outlets - NARA - 293813.jpg 3,000 × 2,112; 1.01 MB
  
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  Looking upstream toward Boulder dam site showing outlet portals of all four diversion tunnels. Flow of Colorado... - NARA - 293890.jpg 3,000 × 2,127; 912 KB
  
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  View looking into Black Canyon from rim of the Arizona wall showing operations in the early stages of the upper... - NARA - 293735.jpg 2,090 × 3,000; 3.66 MB
  
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  Water flowing into inlet portal of Diversion Tunnel No. 4 about an hour after earth barrier had been removed by... - NARA - 293777.jpg 3,000 × 2,095; 3.3 MB