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"# 745 Drilling Jumbo in operation in the face of one of the Diversion Tunnels. From 20 to 25 drills can be operated at once and one-half of the face drilled in one operation. December 8th, 1931. # 671 View of the drilling Jumbo taken...
2017-12-16
"# 770 Nine ""covered wagons"", each having a capacity of forty-eight men, are used to transport the workmen from Boulder City to the canyon. These buses are canvas-covered, the side curtains of which can be raised during hot weather, January...
2017-12-16
"# 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...
2017-12-16
"Page of views of Guest House and hone of Six Companies' Directors when visiting Boulder City. (January 7th, 1932.) # 769 Exterior of rear of building, which occupies a commanding knoll, overlooking Boulder City and the mountains beyond. # 762...
2017-12-16
"A page of views showing the various types of trucks in use by Six Companies Inc. in hauling muck from the upper partalc of the d1 version tunnels. # 494 An International truck with capacity of 7 cubic yards shown on the loft, with approved type...
2017-12-16
"1219 The interior of Diversion Tunnel No. 3, near the upper portal. The invert and side wall sections of the three-feet thick concrete lining have been poured. June 2nd, 1932. 1220 The interior of Diversion Tunnel No. 2, near the upper...

"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...

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...
2017-12-16
"1245 At the head of Las Vegas Wash, which flows into the Colorado River a few miles above the damsite, are many queer and interesting rock formations. June 5th, 1932. 1242 Erosion caused by wind and water have fashioned rocks into fantastic...

"1261 In pouring the portal structure for the upper portals of Diversion Tunnels Nos. 2 and 3, 4-cubic-yard Rex Moto Mixers were lifted from trucks and concrete poured directly in the forms. June 19th, 1932. 1266 View of the upper portal of...

"1378 Fabricated steel forms for placing the 3-foot thick lining in the side wall section of the diversion tunnels being erected outside the upper portal of Diversion Tunnel No. 1. July 23rd, 1932. 1381 Apparatus devised for drilling grout...

"1210 Looking upstream from a point near the presedimentation tank for the Boulder City water supply, during the recent high water, showing how the lower portals of the diversion tunnels have been protected with dikes of tunnel muck. May...

"1364 The open cut excavation for the Arizona spillway. The top-heading for the spillway raise has been holed through and can be seen on the spillway face. July 20th, 1932. 1312 Electric shovels used for tunnel excavation are being used in...

"1217 Placing the steel form for the first pouring of concrete in lining the arch section of the diversion tunnels. View shows upper portal of Diversion Tunnel No. 4. June 2nd, 1932. 1234 Detail view of construction of steel form for...

"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...

"1279 Part of a panoramic view of the canyon rim operations, showing the highway which will cross the dam. The canyon is in the foreground. Note the men scaling the cliffs for the Nevada intake towers. June 21st, 1932. 1280 On this half of...

"1283 Looking into the open cut excavation for the Arizona spillway. June 21st, 1932. 1282 A similar view to No. 1283 on the left, taken from a greater distance, showing the muck roads and spoil dumps. June 21st, 1932. 1291 Looking across...

"1227 View showing a portion of the drug department of Boulder City Company department store. June 2nd, 1932. 1230. This view shows a portion of the men's furnishing department of the Boulder City department store. June 2nd, 1932. 1229...

"1367 Loking downstream toward the face of the Nevada spillway open cut excavation. July 21, 1932. 1360 Close-up of the face of the Nevada spillway open cut excavation, just prior to the first shot going underground. July 20th, 1932"

"1388 The period of danger from high water having passed, protecting arch coffer dams are blasted from the lower portals of the diversion tunnels, and muck fill is being removed. July 27th, 1932. 1418 Trucks with 4 cubic-yard concrete...

"1495 Interior of one of the diversion tunnels, showing panel of concrete lining being poured in the invert section of the tunnel. Side wall tunnel form is shown in the background. August 24th, 1932. 1479 Section of finished diversion...

"1343 Caterpillar tractors with bull-dozer attachment building road near Lookout Point to site of cableway bench. July 18th, 1932. 1344 Construction of the bench for traveling cableway tower necessitates the demolition of Lookout Point, the...

"Deadwood Dam" Completed Npv. 10/30 # 1.00 By Geo R. Nock

"1630 Bulkhead Gate during construction at Upper Portal of Diversion Tunnel No. 1. September 22nd, 1932. 1632 Bulkhead Gate during construction at Upper Portal of Diversion Tunnel No. 1. September 28th, 1932. 1635 Bulkhead Gate construction...

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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