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301. Construction on the power houses viewed from the valve house catwalk
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302. Panorama view, showing Six Companies Inc. work on the Arizona side of Black Canyon Highway.
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303. Close-up of construction on the Arizona valve house
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304. Close-up of construction on the Nevada valve house
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305. Close-up of construction on the Nevada power house
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306. Close-up of construction on the central section of the power house
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307. Construction on Hoover Dam and the power houses looking upstream from the lower portals road
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308. View from the top of Hoover Dam of construction on the power houses
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309. Hoover Dam construction site, looking upstream from the lower portals road
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310. View of the Hoover Dam construction site looking downstream on the Colorado River
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311. Construction on the roadway on top of Hoover Dam
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312. Looking upstream toward the Nevada intake towers, showing the intake bridge girders in place.
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313. Construction on the Nevada power house
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314. Construction on the Arizona power house
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315. Construction on Hoover Dam and the power houses looking upstream from the lower portals road
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316. Construction on the power houses and valve houses viewed from the top of Hoover Dam
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317. Aerial view of Hoover Dam, looking downstream from the Arizona side of Black Canyon
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318. Aerial view of Hoover Dam, looking upstream on the Colorado River
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319. Looking downstream from the Arizona side of Black Canyon, showing the reservoir level at the...
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320. Looking upstream toward no. 1 upstream plug, showing approximately 7,100 second feet of water being...
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321. No. 5 intake tower finished to elevation 1232, showing curtain wall
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322. Looking upstream at the upper end of no. 1 plug, showing forms for the intake...
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323. Telephoto view looking downstream into the Arizona spillway, showing the construction of the spillway bridge
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324. Looking upstream into no. 1 plug, showing the placing of the high pressure valves and...
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325. Form work on the Nevada valve house bench
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326. Arizona valve house from the center of the low cat walk
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327. Telephoto view of Nevada powerhouse units
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328. Telephoto view of Arizona powerhouse units
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329. Hoover Dam, looking upstream
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330. Upstream face of Hoover Dam, looking downstream from the upstream cofferdam
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331. Looking across the downstream face of Hoover Dam, showing the utility towers and elevator shaft
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332. Upstream face of Hoover Dam, and the Arizona intake towers
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333. Upstream face of Hoover Dam, and the Nevada intake towers
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334. Colorado River question : shall natural resources create local or enlarge distant development?
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335. Water from the Colorado River
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336. Endorsement of House Bill 11449 (similar to Senate Bill 3511), Congress of the United States...
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337. Boulder Canyon dam : the essence of the Swing-Johnson Bill ; Boulder Dam : from...
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338. Colorado River Boulder Canyon Project and the All-American Canal
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339. How Boulder Dam power will refinance Colorado River Project : statement to Congressional Colorado River...
 

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