Search for exactly "Construction workers", all of "Six Companies -- Employees"

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1. Construction workers at Hoover Dam
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2. Hoover Dam site, looking downstream
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3. First concrete in Hoover Dam
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4. Construction scene at Hoover Dam site
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5. Unloading huge pipes -- Hoover Dam site
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6. Commemoration of the pouring of the second millionth cubic yard of concrete in Hoover Dam
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7. Hoover Dam, looking downstream
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8. Temporary cableway spanning the Colorado River near Lookout Point
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9. View showing method of finishing slabs in invert lining.
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10. Close-up of trimming jumbo
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11. Construction bridges across the Colorado River
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12. Dam workers return to Boulder City after shift
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13. Workers laying railroad track near Boulder Canyon
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14. Interior of penstock tunnel -- Hoover Dam construction site
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15. Labor strike during the building of Hoover Dam
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16. View of the concrete lining in the diversion tunnels
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17. Hoover Dam site, looking upstream
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18. Bucket skips being filled with "muck" from the deep inner gorge of Black Canyon.
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19. Nevada spillway during construction of Hoover Dam
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20. Interior view of a power house -- Hoover Dam construction site
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21. Final pour in the slot, Hoover Dam
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22. Power shovel and trucks opening up an adit
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23. First 40 foot slab of concrete poured in lining diversion tunnels
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24. Day shift workers boarding transports for the return journey to Boulder City
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25. Train car dumping gravel into hopper at gravel plant
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26. Close-up of sand classifier in the gravel plant.
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27. Agitators dumping concrete into buckets
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28. Construction worker operating a tractor during construction of Hoover Dam
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29. Trucks hauling concrete in the diversion tunnel
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30. Sand classifer in gravel plant producing sand for storage
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31. Six Companies Inc. truck, employees
 

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