Search for exactly "Tunnels", all of "Construction Equipment"

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1. Construction of diversion tunnels -- Hoover Dam site
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2. Construction near the upper portals of diversion tunnels no. 1 and no. 2
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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. Diversion tunnel at Hoover Dam
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5. View of the concrete lining in the diversion tunnels
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6. Looking up Hoover Dam during construction of the diversion tunnels
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7. Putting in the ceiling on the Nevada side of the no. 2 diversion tunnel
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8. Sidewall concreting in diversion tunnel no. 4 showing workers
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9. Power house on Nevada side of Hoover Dam
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10. Side-wall jumbo inside diversion tunnel
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11. Detail of side-wall jumbo inside diversion tunnel
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12. Closeup of Upper Portal of Diversion Tunnels No. 3 and 4, during preparations for blast.
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13. Hoover Dam construcion -- blasting
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14. Workers in diversion tunnels -- Hoover Dam site
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15. Close-up of trimming jumbo
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16. Lewis Construction Company drilling railroad tunnels of U.S. Construction Railroad to Hoover Dam.
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17. Six Companies' power shovel dumping dirt in dump truck in diversion tunnel at Hoover Dam...
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18. Crane transporting mixers in diversion tunnel at Hoover Dam site
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19. Sidewall concreting inside diversion tunnel no. 4
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20. Gas-air shovel caught in the flooded Colorado River
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21. Trash rack structure being installed in front of diversion tunnel no. 2
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22. Looking out of the interior of diversion tunnel no. 2, with gas-air shovel inside the...
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23. Workers and drilling jumbo inside diversion tunnel no. 4
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24. Close-up of workers using a drilling jumbo inside a diversion tunnel
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25. Construction worker in bulldozer in front of diversion tunnel portal
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26. Construction workers using a drilling jumbo inside a diversion tunnel
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27. Invert concrete pouring forms inside diversion tunnel
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28. Gantry crane inside diversion tunnel no. 3
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29. Invert forms inside diversion tunnel no. 3
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30. Concrete lining inside diversion tunnel no. 2
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31. Concrete side wall lining in diversion tunnel no. 3
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32. Construction of steel forms for the lining of the diversion tunnels
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33. Detail of a sidewall jumbo inside diversion tunnel no. 3
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34. Interior of spillway tunnel, Hoover Dam site
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35. Interior of diversion tunnel during Hoover Dam construction
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36. Excavation for downstream plug, Diversion Tunnel No. 2.
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37. Excavation for downstream plug, Diversion Tunnel No. 3.
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38. Concrete pouring forms inside lower no. 2 plug
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39. Construction on the Nevada power house
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40. Construction on the no. 4 penstock raise
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41. Construction in the no. 4 penstock raise
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42. Construction inside the upper no. 3 plug
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43. Construction in the no. 1 penstock raise
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44. Switchyard control circuit tunnel under construction -- Hoover Dam site
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45. Construction at Hoover Dam, inside a tunnel
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46. Number 3 plug and raise
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47. View of no. 4 plug, Hoover Dam site
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48. View inside a tunnel at Hoover Dam site
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49. Interior of Hoover Dam diversion tunnel during construction
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50. Hoover Dam during construction
 

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