1. Hoover Dam construction -- transporting equipment
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2. Hoover Dam construction equipment
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3. Construction equipment -- Hoover Dam
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4. Hoover Dam construction site, looking upstream
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5. Hoover Dam site, looking upstream
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6. Hoover Dam site, looking downstream
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7. First concrete in Hoover Dam
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8. Hoover Dam, looking upstream
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9. Hoover Dam, looking downstream
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10. Hoover Dam construction, looking upstream
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11. Concrete pouring forms on the Hoover Dam construction site seen from downstream
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12. Hoover Dam construction, looking upstream
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13. Hoover Dam construction, looking upstream
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14. Hoover Dam construction, looking upstream
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15. Hoover Dam construction, looking upstream
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16. Hoover Dam construction, looking upstream
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17. Hoover Dam construction, looking upstream
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18. Hoover Dam construction, looking upstream
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19. Hoover Dam construction, looking upstream
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20. Hoover Dam under construction
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21. Black Canyon during dam construction
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22. Bucket skips being filled with "muck" from the deep inner gorge of Black Canyon.
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23. One of the construction sites in Boulder Canyon.
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24. Panoramic view of the Upper Cofferdam, looking downstream
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25. Construction workers on cliffs in Boulder Canyon.
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26. Floor of Black Canyon
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27. Black Canyon
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28. Construction of the bases of the Arizona intake towers
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29. Arizona intake tower derrick.
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30. Construction on the Nevada intake towers
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31. Construction on the upstream face of Hoover Dam
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32. View taken looking upstream on the Colorado River of the Hoover Dam construction site
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33. Construction of the Arizona power house foundations
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34. Construction on the foundation of the Arizona power house
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35. Aerial view of the Hoover Dam construction site, looking upstream on the Colorado River
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36. Aerial view of the Hoover Dam construction site, looking upstream on the Colorado River
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37. Aerial view of the Hoover Dam construction site, looking upstream on the Colorado River
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38. Construction on the Nevada intake towers
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39. Construction on the Arizona intake towers and spillway
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40. Construction on the Nevada power house
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41. Construction on the power house footings
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42. Aerial photo of Hoover Dam construction site
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43. Workers on the Colorado River
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44. Aerial view of the Hoover Dam construction site looking upstream on the Colorado River
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45. Aerial view of the Hoover Dam construction site looking downstream from the Arizona side
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46. Hoover Dam construction site viewed from the downstream cofferdam
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47. Construction on the Arizona power house
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48. Aerial view of the Hoover Dam construction site viewed from downstream on the Colorado River
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49. Construction on the Arizona spillway
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50. Construction on the Arizona spillway and the no. 4 penstock raise in Black Canyon
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