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1. Endorsement of House Bill 11449 (similar to Senate Bill 3511), Congress of the United States...
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2. Colorado River question : shall natural resources create local or enlarge distant development?
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3. Hoover Dam construction, looking upstream
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4. Hoover Dam construction, looking upstream
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5. Hoover Dam construction, looking upstream
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6. Hoover Dam construction, looking upstream
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7. Hoover Dam construction, looking upstream
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8. Hoover Dam construction, looking upstream
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9. Hoover Dam construction, looking upstream
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10. Boulder Canyon dam : the essence of the Swing-Johnson Bill ; Boulder Dam : from...
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11. Train loaded with gravel leaving the gravel pits
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12. Colorado River problem
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13. Some desert watering places in southeastern California and southwestern Nevada
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14. Colorado River basin : hearings before the Committee on irrigation and reclamation, House of representatives,...
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15. Locomotives at the gravel plant yard
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16. Colorado River basin : hearings before the Committee on irrigation and reclamation, House of representatives,...
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17. Hoover Dam construction
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18. Hoover Dam during construction
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19. Hoover Dam during construction
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20. Hoover Dam under construction
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21. Hoover Dam during construction
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22. Hoover Dam construction
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23. Hoover Dam under construction
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24. Close-up of Hoover Dam construction
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25. Unloading huge pipes -- Hoover Dam site
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26. Train at Himix Concrete Plant -- Hoover Dam site
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27. Nevada intake towers under construction at Hoover Dam
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28. Himix and cement blending plants -- Hoover Dam site
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29. Nevada intake towers, Hoover Dam construction site
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30. Upstream face and intake towers of Hoover Dam during construction
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31. View of a spillway bridge during construction of Hoover Dam
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32. Arizona Black Canyon highway consruction
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33. View of valve house under construction -- Hoover Dam
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34. Valve house under construction -- Hoover Dam
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35. Construction at Hoover Dam, inside a tunnel
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36. Hoover Dam power house under construction
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37. View from the top of Hoover Dam during construction
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38. Tourists arriving in Boulder City.
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39. Part of the crowd at the Boulder Junction ceremonies
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40. Train car dumping gravel into hopper at gravel plant
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41. Railroad cars and siding
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42. Cement plant -- Hoover Dam site
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43. Temporary cableway spanning the Colorado River near Lookout Point
 

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