Search for all of "Colorado River", all of "Hoover Dam ariz And Nev -- Design And Construction", all of "Black Canyon ariz And Nev"

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51. Hoover Dam Construction -- blasting
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52. Hoover Dam construction
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53. Blasting at Hoover Dam site
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54. Hoover Dam construcion -- blasting
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55. Scalers -- Hoover Dam site
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56. Black Canyon prior to dam construction
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57. Looking up Black Canyon from the dam site
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58. Aerial view of sundown in Black Canyon at the Hoover Dam construction site
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59. Preliminary construction at Hoover Dam site
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60. Hoover Dam construction
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61. Hoover Dam construction
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62. Sundown in Black Canyon at the Hoover Dam construction site
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63. Hoover Dam construction
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64. Hoover Dam construction
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65. Hoover Dam construction
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66. Hoover Dam site from the Nigger Head, Diversion tunnel construction
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67. Hoover Dam construction -- various phases
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68. Hoover Dam construction
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69. Looking up Black Canyon during construction of the diversion tunnels
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70. Hoover Dam construction
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71. Hoover Dam construction
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72. Hoover Dam construction
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73. Looking up Black Canyon during the construction of the diversion tunnels
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74. Early stages of construction of Hoover Dam
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75. Black Canyon during early stages of dam construction
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76. Bridge construction near Hoover Dam site
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77. Construction at lower portal of Hoover Dam
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78. Hoover Dam construction
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79. Aerial view -- Hoover Dam construction
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80. Hoover Dam construction, looking upstream
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81. Bridge across Boulder Canyon at Hoover Dam site.
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82. View of railroad tracks being laid at Hoover Dam site.
 

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