Archival objects in this container: Blast on cableway bench excavation, on Arizona side, above dam site. Photograph taken from lower portal of Railroad tunnel Number 1: photographic print, 1932 August 24 Close-up of upper portal of diversion tunnels Number 3 and 4, during preparations for blast: photographic print, 1932 November 13 Detail image of side-wall "jumbo" used in placing 3-foot thick lining in diversion tunnels. Side wings are jacked into place, and concrete is poured through ports by a traveling crane and 2 yard buckets: photographic print, 1932 April 18 Excavation for benches for movable cableway towers being carried on, near Lookout Point: photographic print, 1932 August 14 First-aid station and ambulance located at river camp above upper portals. Similar hospital is maintained at lower portals: photographic print, 1932 March 08 Foundations for the trash rack structure being installed in front of upper portal of diversion tunnel Number 2. This is where the first pay concrete was poured: photographic print, 1932 March 07 Gantry crane used in pouring concrete in invert section of upper diversion tunnel Number 3: photographic print, 1932 March 18 Interior of diversion tunnel Number 3, near upper portal. Invert and side wall sections of three-feet thick concrete lining have been poured: photographic print, 1932 June 02 Looking across reservoir area, which will be submerged when Hoover Dam is completed. Flat-topped hill in center of photograph will form a small island and ridge in foreground will be submerged: photographic print, 1932 August 15 Looking out of upper portal of diversion tunnel Number 2. Bucyrus-Erie 43-B gas-air shovel reflected in pool of water: photographic print, 1932 March 07 Looking upstream at Black Canyon. Dam will be located just upstream from footbridge, at bottom of picture. Entrance to upper portals of diversion tunnels opposite the middle truck bridge: photographic print, 1932 March 12 Low level concrete mixing plant. View taken from cliffs on Arizona side of river: photographic print, 1932 March 28 Lower portals of diversion tunnels Number 3 and 4 during flood: photographic print, 1932 February 10 Marion electric shovel with 3.5 cubic yard rock dipper loading into White 8 cubic yard truck, at Nevada spillway cut: photographic print, 1932 March 18 Marion type of 125 electric dragline with 5 cubic yard bucket loading into 30 cubic yard side dump cars at gravel pit. Mikado type locomotives pull 10-car trains, 3 trains of this type in operation: photographic print, 1932 May 03 Nevada spillway open cut excavation, as seen from Arizona side of river: photographic print, 1932 March 28 One of four photographs, forming a panorama of operations being carried on at canyon rim, on Nevada side. Photo was taken from Arizona spillway site. To the left is shown Black Canyon Highway. High level mixing plant will be located behind fill on the road. To the right is shown highway extension road to Nevada spillway. Note shovel boom projecting at former site of Lookout Point: photographic print, 1932 August 12 Panoramic view of upper cofferdam, looking downstream: photographic print, 1932 November 26 Portion of gravel pits on Arizona side of the river, 11 miles above dam-site. Hills in background are across the river in Nevada, 5 miles away: photographic print, 1932 January 16 Scaling down canyon wall, in excavation for intake tower on Nevada side: photographic print, 1932 April 01 Steel forms for lining the arch sections of diversion tunnels were erected on muck-fill on Nevada side of river: photographic print, 1932 June 18 Steel suspension truck bridge immediately below lower portals of diversion tunnels. Lower portals of diversion tunnels Number 3 and 4 in background: photographic print, 1932 February 03 Temporary cable-way spanning Colorado River, near Lookout Point, provides access to Arizona spillway operations shown in background: photographic print, 1932 April 01 View of dedication ceremonies by the Elks' Lodge on the bicentennial of George Washington's birth. A flag pole was erected and ceremonies held at canyon rim near the dam-site: photographic print, 1932 February 22 As protection against high water, a "bridle" has been attached to upstream face of gravel pit bridge. A 3-inch cable is anchored to concrete dead-men and horizontal stays are attached to bents on bridge: photographic print, 1932 May 15 Load More
