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

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1. Nevada spillway during construction of Hoover Dam
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2. Himix Concrete Plant at Hoover Dam site
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3. Nevada power house at Hoover Dam construction site
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4. Downsteam view of Hoover Dam, showing power house construction
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5. View of power houses being constructed at the Hoover Dam site
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6. Looking downstream on the Hoover Dam construction site
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7. View of Arizona spillway during construction
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8. Final pour in the slot, Hoover Dam
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9. Switchyard control circuit tunnel under construction -- Hoover Dam site
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10. Switchyard control house, yard and present substation -- Hoover Dam site
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11. Workers in transport buses
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12. Power shovel and trucks opening up an adit
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13. Construction of Hoover Dam diversion tunnel
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14. Construction workers inside Hoover Dam diversion tunnel
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15. Portals, Hoover Dam construction
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16. Transport trucks at Hoover Dam site
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17. Construction of Hoover Dam
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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 at lower portal of Hoover Dam
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22. Power houses being constructed at Hoover Dam
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23. Construction of Hoover Dam
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24. Construction of Hoover Dam
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25. Construction bridges across the Colorado River
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26. Six Companies' power shovel dumping dirt in dump truck in diversion tunnel at Hoover Dam...
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27. Construction near the upper portals of diversion tunnels no. 1 and no. 2
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28. Construction workers with electric light reflectors standing by a truck in Black Canyon
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29. Construction at Hoover Dam
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30. Construction of the Arizona power house
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31. Hoover Dam -- valve outlets in operation on the Arizona side
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32. Trucks hauling concrete in the diversion tunnel
 

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