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

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51. Work on cofferdam -- Hoover Dam
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52. Construction -- Hoover Dam
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53. Hoover Dam construction equipment
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54. Construction equipment -- Hoover Dam
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55. Hoover Dam construction
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56. Rock and gravel plant near Hoover Dam site
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57. Construction of gravel plant near Hoover Dam site
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58. Early stages of construction of Hoover Dam
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59. Construction at lower portal of Hoover Dam
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60. Power houses being constructed at Hoover Dam
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61. Construction of Hoover Dam
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62. Construction of Hoover Dam
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63. Hoover Dam construction
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64. Construction of Hoover Dam
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65. Aerial view -- Hoover Dam construction
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66. Construction bridges across the Colorado River
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67. Six Companies' power shovel dumping dirt in dump truck in diversion tunnel at Hoover Dam...
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68. Construction near the upper portals of diversion tunnels no. 1 and no. 2
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69. Screened aggregate and sand in front of the gravel plant
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70. Construction workers with electric light reflectors standing by a truck in Black Canyon
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71. Blasting on the Arizona side of the cableway bench excavation
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72. Rock blasting in Black Canyon
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73. Close-up of Hoover Dam construction
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74. Construction at Hoover Dam
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75. Construction of the Arizona power house
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76. Hoover Dam -- valve outlets in operation on the Arizona side
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77. Hoover Dam -- outlet works
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78. Power house -- Hoover Dam
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79. Upstream face of Hoover Dam, looking downstream from the upstream cofferdam
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80. High scalers -- Hoover Dam site
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81. Trucks hauling concrete in the diversion tunnel
 

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