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151. Downstream face of Hoover Dam
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152. Aerial view of Hoover Dam
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153. Construction bridges across the Colorado River
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154. Six Companies' power shovel dumping dirt in dump truck in diversion tunnel at Hoover Dam...
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155. Hoover Dam, looking upstream
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156. Semi-tropical Nevada : a region of fertile soils and flowing wells
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157. Water from the Colorado River
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158. Boulder Canyon dam : the essence of the Swing-Johnson Bill ; Boulder Dam : from...
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159. Hoover Dam from Lookout Point on the Nevada side with cars in foreground
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160. Power house on Nevada side of Hoover Dam
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161. Train loaded with gravel leaving the gravel pits
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162. Construction near the upper portals of diversion tunnels no. 1 and no. 2
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163. First-aid station and ambulance
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164. Screened aggregate and sand in front of the gravel plant
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165. Las Vegas, Nevada, where farming pays : the artesian belt of semi-tropic Nevada
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166. Construction workers with electric light reflectors standing by a truck in Black Canyon
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167. Future Hoover Dam reservoir area seen from Black Canyon
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168. Blasting on the Arizona side of the cableway bench excavation
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169. Rock blasting in Black Canyon
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170. Railroad freight cars carrying gravel across a trestle bridge on the Colorado River
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171. Colorado River basin : hearings before the Committee on irrigation and reclamation, House of representatives,...
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172. Locomotives at the gravel plant yard
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173. Trains on Elevation 720 Railroad Bench, hauling conrete to Hoover Dam.
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174. Black Canyon
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175. Close-up of Hoover Dam construction
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176. Close-up of two-way trailer
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177. View of two hundred ton two-way trailer, with test load
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178. Train at Himix Concrete Plant -- Hoover Dam site
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179. Constructing highway to dam site
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180. Construction at Hoover Dam
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181. Workers on the Colorado River
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182. View of railroad tracks being laid at Hoover Dam site.
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183. Arizona Black Canyon highway consruction
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184. Construction of the Arizona power house
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185. Looking upstream toward Lake Mead
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186. Ferry landing on the Colorado River
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187. Highway near Boulder City
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188. Highway near Boulder City
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189. Boulder pack train, tourist concession on the Colorado River near Black Canyon
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190. Ragtown (also known as Williamsville) on the shore of the Colorado River near Black Canyon
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191. Ragtown, on the shore of the Colorado River near Black Canyon
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192. Tourists and film crew in Black Canyon
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193. Tourists arriving in Boulder City.
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194. Hoover Dam -- valve outlets in operation on the Arizona side
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195. Machine shop and warehouse group of buildings
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196. Hoover Dam -- upstream side
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197. Hoover Dam -- upstream side
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198. Hoover Dam -- upstream side
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199. Hoover Dam outlet works
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200. Part of the crowd at the Boulder Junction ceremonies
 

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