Search for all of "Transportation", all of "Construction Workers", all of "Construction Equipment"

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1. Hoover Dam site, looking upstream
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2. Hoover Dam site, looking downstream
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3. Nevada spillway during construction of Hoover Dam
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4. Himix Concrete Plant at Hoover Dam site
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5. Unloading huge pipes -- Hoover Dam site
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6. Nevada power house at Hoover Dam construction site
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7. Downsteam view of Hoover Dam, showing power house construction
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8. View of power houses being constructed at the Hoover Dam site
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9. Looking downstream on the Hoover Dam construction site
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10. Top of Hoover Dam, during construction
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11. View of Arizona spillway during construction
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12. Final pour in the slot, Hoover Dam
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13. Switchyard control circuit tunnel under construction -- Hoover Dam site
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14. Hoover Dam construction, looking down on top
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15. Switchyard control house, yard and present substation -- Hoover Dam site
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16. Construction of Hoover Dam diversion tunnel
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17. Construction workers inside Hoover Dam diversion tunnel
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18. Upper portals -- Hoover Dam site
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19. Work on cofferdam -- Hoover Dam
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20. Construction of gravel plant near Hoover Dam site
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21. Construction bridges across the Colorado River
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22. Six Companies' power shovel dumping dirt in dump truck in diversion tunnel at Hoover Dam...
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23. Construction near the upper portals of diversion tunnels no. 1 and no. 2
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24. Construction workers with electric light reflectors standing by a truck in Black Canyon
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25. Black Canyon
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26. View of two hundred ton two-way trailer, with test load
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27. Constructing highway to dam site
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28. Construction at Hoover Dam
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29. Workers on the Colorado River
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30. Temporary cableway spanning the Colorado River near Lookout Point
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31. Trucks hauling concrete in the diversion tunnel
 

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