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976 - 1000 of 1090 Items << < 35 36 37 38 39 40 41 42 43 44 > >>
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"# 539 steam Locomotive hauling muck train from the dump hopper at the low level mixing plant for the disposal of tunnel muck along the right-of-way above the river-camp, which is seen in the background. January 28th, 1932.
#537 Four 90-ton...
2024-04-26
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"# 414 Shovel being transported across the river on
a barge to commence the operations of enlarging the tunnels from their twelve by twelve topheadings, shown in the picture, to their full diameter. October 27th, 1931.
# 597 Same as # 414....
2024-04-26
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"# 672 View of truck depot on the Nevada side of the river, near the upper portals of the Diversion Tunnels. The upper Arizona portals are shown across the river in the background. December 13th, 1931.
# 741 A general view, looking...
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"#119 U. S. Government Railroad and
Highway - leading to Dam Site -from Hoover Point. Sept. 3, 1931.
#186 California-Nevada Power Co., Substation, near Dam-site. Government Railroad and Government Highway from Boulder City to...
2024-04-26
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"A page of Boulder City views, showing some of the buildings erected by Six Companies Inc.
# 750 View of Dormitory #5. Eight similar dormitories
have been erected, each building housing 172 men in individual rooms. All buildings are...
2024-04-26
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"#22 - No. 1, Marion Electric Shovel Loading Trucks, Lower Portal No. 1 Tunnel, July 6, 1931.
#24 - Drilling for Rock Excavation, Lower Portal No. 2 Tunnel. July 6, 1931.
#19 - No. 3 Compressor Plant, June 25, 1931.
#20 - No. 3 Compressor...
2024-04-26
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"#29 - Nevada Adit and Middle Suspension Bridge---June 30, 1931.
#27 - Conway Mucking Machine Loading Cars
at the Upper Portal, R. R. Tunnel #1. June 30, 1931."
2024-04-26
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"3172 Telephoto view, looking downstream into the Arizona Spillway. Note the bridge and control house. March 26th, 1935.
3158 Telephoto view, looking downstream into the Nevada Spillway. Note the Spillway Control House beirg formed. March...
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"2541 General view of Nevada Intake Towers from Arizona side, showing Lomix trestle below. February 20th, 1934.
2540 General view of Arizona Intake Towers and Spillway from Nevada Himix trestle. February 20th, 1934."
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"2774 View showing river side of Arizona Spillway, looking downstream. July 24th, 1934.
2761 Looking upstream toward the Nevada Spillway, showing the placing of the Cylinder Gates. July 20th, 1934.
2758 First 30-ft. penstock pipe...
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"3152 Looking upstream toward the Nevada Intake Towers, showing the Intake Bridge girders in place.
March 25th, 1935.
3181 Looking upstream toward No. 1 upstream plug, showing approximately 7,100 second feet of water being
discharged....
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"3457 Looking upstream toward Boulder Dam and the Power House. September 26th, 1935.
3460 From the top of Boulder Dam, looking down on the Power House. The roof slab is practically completed, and the canyon wall gutters are in place....
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"3203 View of Power House Governor Gallery, Elevation 645, looking downstream on the Arizona side. April 10th, 1935.
3201 View of Power House Turbine Gallery, Elevation 643, looking downstream on the Arizona side. April 10th, 1935.
3199...
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"2388 Boulder Dam, looking upstream. October 15th, 1933.
2405 Upstream plug in Diversion Tunnel No. 3, after excavation of raise and Upstream Intake Tower was completed. October 30th, 1933.
2413 Boulder Dam, looking downstream. October 31st,...
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"17 No. 3 derrick in service at Boulder Dam. January 24th, 1934.
2529 Boulder Dam, looking upstream. January 31st, 1934."
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"2578 Boulder Dam, looking upstream. March 16th, 1934.
1618 Boulder Dam, looking upstream. April 1st, 1934."
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"2350 Telephoto view of Boulder Dam, Cooling Tower and Refrigeration Plant, looking downstream. September 14th, 1933.
2379 Arizona Spillway, looking upstream. October 7th, 1933.
2378 Nevada Spillway, looking upstream. October 7th, 1933."
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"2860 Looking downstream into the Arizona Spillway. September 27th, 1934
2861 Looking downstream into the portal of No. 4 Raise. September 27th, 1934
2865 Looking from the Arizona side, toward the Nevada side, showing all four...
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"3169 View taken from the Arizona side, showing the Intake Towers and the upstream face of Boulder Dam.
March 26th, 1935.
3160 Looking downstream toward No. 6 Arizona Intake Tower Control House. Note the bridge forms being placed for pouring....
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"2018 Scaling activities at the site of the Nevada abutment for Hoover Dam. Head Tower for Cableway #7 shown at top. March 9th, 1933.
2020 Scaling activities at the sit of the Arizona abutment for Hoover Dam. Tail Towers tor Cableways #5, 6...
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"2230 General view of bedrock for Hoover Dam, showing final excavation cleanup. View taken looking upstream.
June 3rd, 1933.
2239 First forms for Hoover Dam. View taken looking downstream. June 6th, 1933.
2210 Test of 150-ton Government...
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"1885 View of wooden form for concrete lining in the 18-foot Penstock Branches. January 26th, 1933.
1888 View of yard for the manufacturing of porous drain tiles in the Spillways. January 26th, 1933.
1898 Hi-Mix Concrete Plant and mixers...
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"1699 Erection of Steel Trestle and Headtower for No. 7 and No. 8 Cableway, Nevada side. October 29th, 1932.
1710 Government Materials Warehouse and Yard, near Boulder City. October 29th, 1932.
1684 Looking down on Nevada Runway for...
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"1458 Interior view of Six Companies Inc. garage and automobile repair shop in Boulder City. Complete facilities are installed for overhauling all classes of automobile equipment. August 15th, 1932.
1474 Interior of tire shop of Six...
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"1705 Closeup of Excavation of Trench for Cutoff Wall at Upper Cofferdam. October 29th, 1932.
1704 Closeup for Excavation for Upper Cofferdam. October 29th, 1932.
1707 Telephoto picture of Excavation for Upper Cofferdam, taken from...
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