Search for exactly "Diversion tunnels"

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1. Construction near the upper portals of diversion tunnels no. 1 and no. 2
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2. Diversion tunnels under construction - Hoover Dam
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3. Dump trucks on temporary dike in front of portals of diversion tunnels no. 3 and...
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4. Aerial view of the Colorado River showing diversion of the river into diversion tunnels no....
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5. Construction of diversion tunnels -- Hoover Dam site
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6. Partially washed-out truck bridge across from diversion tunnels
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7. Looking up Hoover Dam during construction of the diversion tunnels
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8. Looking up Black Canyon during construction of the diversion tunnels
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9. Hoover Dam -- diversion tunnels in use
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10. Hoover Dam -- diversion tunnels in use
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11. Looking up Black Canyon during the construction of the diversion tunnels
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12. First 40 foot slab of concrete poured in lining diversion tunnels
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13. Diversion tunnels during Hoover Dam construction
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14. Closeup of Upper Portals of Diversion Tunnels No. 3 and 4, showing flow in Diversion...
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15. Lower portals of Diversion Tunnels No. 3 and No. 4, during the flood.
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16. Side-wall jumbo inside diversion tunnel
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17. Construction of steel forms for the lining of the diversion tunnels
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18. Detail of side-wall jumbo inside diversion tunnel
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19. Closeup of Upper Portal of Diversion Tunnels No. 3 and 4, during preparations for blast.
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20. Water flowing into Colorado River, June 16, 1933
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21. Diversion tunnel at Hoover Dam
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22. Night view of the diversion tunnels
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23. View of the concrete lining in the diversion tunnels
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24. Hoover Dam construcion -- blasting
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25. Workers in diversion tunnels -- Hoover Dam site
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26. Aerial view of Hoover Dam
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27. Aerial view of Hoover Dam
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28. Aerial view of Hoover Dam
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29. Close-up of trimming jumbo
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30. Putting in the ceiling on the Nevada side of the no. 2 diversion tunnel
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31. Putting in the ceiling on the Nevada side of the no. 2 diversion tunnel
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32. No. 1 and no. 2 tunnels
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33. Sidewall concreting in diversion tunnel no. 4 showing workers
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34. Trash rack at the upper portals of diversion tunnnel no. 2.
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35. Aerial view of Hoover Dam and surrounding area
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36. Aerial view of Hoover Dam
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37. Construction of Hoover Dam
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38. Six Companies' power shovel dumping dirt in dump truck in diversion tunnel at Hoover Dam...
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39. Construction of Hoover Dam
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40. Construction of Hoover Dam
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41. Crane transporting mixers in diversion tunnel at Hoover Dam site
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42. Water from the Colorado River
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43. Boulder Canyon dam : the essence of the Swing-Johnson Bill ; Boulder Dam : from...
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44. Looking across the river at the lower portal of Diversion Tunnel No. 3.
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45. Gas-air shovel caught in the flooded Colorado River
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46. Trash rack structure being installed in front of diversion tunnel no. 2
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47. Looking out of the interior of diversion tunnel no. 2, with gas-air shovel inside the...
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48. Workers and drilling jumbo inside diversion tunnel no. 4
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49. Close-up of workers using a drilling jumbo inside a diversion tunnel
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50. Construction worker in bulldozer in front of diversion tunnel portal
 

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