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51 - 75 of 251 Items << < 1 2 3 4 5 6 7 8 9 10 > >>
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"2262 Hoover Dam. June 27th, 1933.
2256 Cut-off trench at upstream side of Hoover Dam. June 23rd, 1933.
2263 Hoover Dam. June 27th, 1933."
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"2468 Upstream face of Boulder Dam. December 27th, 1933.
2474 Downstream face of Boulder Dam. December 27th, 1933.
2466 Boulder Dam. View taken looking upstream. December 27th, 1933."
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"2667. Panorama, looking downstream in Black Canyon, taken from the Nevada side, showing the upstream face of 2668. Boulder Dam, Arizona and Nevada Spillways, Intake Towers, Cableways and general construction. May 12th, 1934.
2697. Arizona...
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"2528 Forms for transition at the Downstream Plug of Diversion Tunnel No. 2. Jauary 27th, 1934.
2507 Nevada Spillway Weir section. January 24th, 1934.
2506 Nevada Spillway, looking upstream. January 24th, 1934."
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"3319 Panorama view, showing Six Companies Inc. work on the Arizona side of Black Canyon Highway
3320 June 24th, 1935.
3327 Arizona Valve House, from the Nevada side. June 24th, 1935.
3328 Nevada Valve House, from the Arizona side. June...
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"2905 Central section of the Powerhouse, looking toward the Nevada side, showing the floor level. No. 2 adit car in the extreme background. October 30th, 1934.
2908 Nevada Powerhouse, showing the reinforcing and walls around the penstock...
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In 1931, Utah joined Six Companies Inc. to raise the surety required to bid for the Boulder (Hoover) Dam contract. One of the world’s largest dams, Hoover Dam was completed in 1936 at a cost of $49 million. These scrapbooks document through...
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In 1931, Utah joined Six Companies Inc. to raise the surety required to bid for the Boulder (Hoover) Dam contract. One of the world’s largest dams, Hoover Dam was completed in 1936 at a cost of $49 million. These scrapbooks document through...
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"2301 Hoist House and Nevada Anchorage, Government Cableway August 9th, 1933.
2310 Trains on Elev. 720 Railroad Bench, hauling concrete to Hoover Dam. August 12th, 1933.
2322 Hoover Dam August 15th, 1933."
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"1925 General view of Downstream Cofferdam and excavation m river bed for Power House, February 10th, 1933.
1996 View of the Himix Concrete Mixing Plant. February 28th, 1933.
1992 Looking downstream in Black Canyon from the upstream...
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"1413-1414 These pictures, together with the two on the opposite page, complete the panorama of the canyon rim operations on the Nevada side of the river. In the picture to the left is shown the open cut excavation for the Nevada spillway....
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"1674 Closeup of Bulkhead Gate at Upper Portal of Diversion Tunnel No. I. October 25th, 1932
1696 Part of shipment of Bulkhead Gate Structural Steel transported by special train from Los Angeles Plant of Consolidated Steel
Corporation....
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1506 A blast on the cableway bench excavation, on the Arizona side, above the damsite. Picture taken from lower portal of Railroad Tunnel No. 1. August 24th, 1932.
1507 Huge billows of rock and dust pour over the canyon rim and descend to...
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In Nov 1967, a Deep Water Isotopic Current Analyzer (DWICA) was used to study current patterns in the Boulder Basin of Lake Mead to determine if low-quality water from Las Vegas Bay might enter the Southern Nevada Water Project intake on Saddle...
1971-10-01
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In Nov 1967, a Deep Water Isotopic Current Analyzer (DWICA) was used to study current patterns in the Boulder Basin of Lake Mead to determine if low-quality water from Las Vegas Bay might enter the Southern Nevada Water Project intake on Saddle...
1971-10-01
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A pamphlet printed in December, 1928 for distribution in water and power bills regarding the construction of Boulder Dam.
1928-12-01
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Resolution by the Federation of State Societies of Southern California endorsing the gravity flow of waters from the Colorado River into southwestern California. Inludes a map of the Colorado River Basin and the southwest, showing "Turle" gravity...
1909-04-24
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"1285 Looking down from the cliffs, near the Arizona spillway, at the construction operations in and around the vicinity of the upper portals of the diversion tunnels on the Nevada side of the river. June 21st, 1932.
1284 Close-up view of...
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"1277 Steel forms for lining the arch sections of the diversion tunnels were erected on the muck-fill on the Nevada side of the river. June 18th, 1932.
1235 Section of the arch jumbo form being transported across the river by overhead...
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"A page of canyon views.
# 834 The low level concrete mixing plant nearing
completion. Silos for the storage of cement and bunkers for gravel storage which have been installed in the upper stories. January 28th, 1932.
# 826 The down-stream...
2024-05-05
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"#82 Lower Diversion Tunnel - Portal
No. 2, Nevada Side - Aug. 26, 1931.
#189 Hydraulic Workings just below Lower
Portal3 No. 1 and No. 2 - Sept. 9, 1931,
#201 ""Cherry Picker"" Tunnel No. 2 -Nevada Side - Sept. 10, 1931.
#227...
2024-05-05
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"#308 - View of site of gravel screening plant at Junction City in Hemenway Wash, on October 6, 1931.
#415 - Same as above, on October 27, 1931,
#321 - Flashlight of face of No. 4 Diversion Tunnel. Experimental jumbo for drill¬ing on...
2024-05-05
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"A page of views of Six Companies Inc. Recreation Hall in Boulder City. This building houses pool and billiard tables, soda fountain, lunch counter, barber shop, reading room and card tables, cigar and magazine counter, and is the social and...
2024-05-05
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"#35-269 First shot, Construction of Water Trail Canyon Road. May 2, 1931.
#36-236 First Portable Compressor at Railroad Tunnel No. 1. May 22, 1931.
#37-260 Bucyrus Shovel Working on Road
to Lower End of Tunnels #1 & #2, May 2, 1931....
2024-05-05
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"#76 - Masonry Retaining Wall for Highway Fill above Damsite. August 9, 1931
#77 - Location Lower Highway
Switch Back above Damsite August 9, 1931.
#78 - Dump Truck on Arizona Side and Approach Cut, Lower #1 & #2 Tunners, Nevada Side....
2024-05-05
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