1. Himix Concrete Plant at Hoover Dam site
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2. First concrete in Hoover Dam
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3. View of the concrete lining in the diversion tunnels
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4. Concrete form construction work
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5. Invert concrete pouring forms inside diversion tunnel
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6. Concrete lining inside diversion tunnel no. 2
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7. Concrete pouring forms below a cofferdam in the Hoover Dam construction site
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8. Close-up of Hoover Dam concrete pouring construction taken from the Arizona side, looking downstream
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9. Looking downstream over the top of Hoover Dam
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10. Commemoration of the pouring of the second millionth cubic yard of concrete in Hoover Dam
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11. Final pour in the slot, Hoover Dam
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12. Diversion tunnel no. 2, showing the pumpcrete line to the upstream plug
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13. First 40 foot slab of concrete poured in lining diversion tunnels
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14. Pouring concrete -- Hoover Dam
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15. Hoover Dam -- Cement work
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16. Trucks hauling concrete in the diversion tunnel
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17. Union Pacific Streamline train at the dam site
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18. Gantry crane inside diversion tunnel no. 3
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19. Side-wall jumbo inside diversion tunnel
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20. Section of a concrete-pouring jumbo standing outside of a diversion tunnel
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21. Trains on Elevation 720 Railroad Bench, hauling conrete to Hoover Dam.
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22. Construction on Hoover Dam, looking downstream on the Colorado River
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23. Excavation for bridge abutment in Arizona spillway.
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24. Nevada power house at Hoover Dam construction site
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25. Downsteam view of Hoover Dam, showing power house construction
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26. View of power houses being constructed at the Hoover Dam site
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27. Power house under construction at Hoover Dam site
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28. Construction workers on the drum gates in the Arizona spillway
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29. Top of Hoover Dam, during construction
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30. Top of Hoover Dam, during construction
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31. View of bridge across Hoover Dam during construction
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32. Hoover Dam construction, looking down on top
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33. Intake towers during construction of Hoover Dam
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34. Construction at Hoover Dam, inside a tunnel
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35. Construction of the Arizona power house
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36. Central section of the powerhouse
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37. View of no. 1 plug showing the arch and raise
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38. Looking upstream at Hoover Dam during construction
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39. Steel rails on the roof of the Nevada valve house awaiting concrete pouring
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40. Construction on the Arizona power house
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41. Construction on the power houses viewed from the valve house catwalk
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42. Looking upstream toward the Nevada intake towers, showing the intake bridge girders in place.
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43. Construction on the Arizona power house
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44. Construction on crest of Hoover Dam
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45. No. 5 intake tower finished to elevation 1232, showing curtain wall
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46. Agitators dumping concrete into buckets
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47. Telephoto view of Arizona powerhouse units
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48. Looking across the downstream face of Hoover Dam, showing the utility towers and elevator shaft
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49. Cement work -- Hoover Dam
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50. Construction of Hoover Dam diversion tunnel
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