Pg.74 #3203 View of Power House Governor Gallery, elevation 645, looking downstream on the Arizona side. Apr. 10, 1935. Pg.74 #3199 View of Power House Pump Gallery, elevation 625, looking downstream on the Arizona side. Apr. 10, 1935. Pg.74 #3201 View of Power House Turbine Gallery, elevation 643, looking downstream on the Arizona side. Apr. 10, 1935. Pg.74 #3194 View of Power House Cable Gallery, elevation 653, looking downstream on the Arizona side. Apr. 10, 1935.
Pg.85 #3355 Looking downstream toward the Arizona Spillway, showing highway bridge and Arizona Highway. Jul. 25, 1935. Pg.85 #3381 Switchyard, Rigging Loft, and surround area. Jul. 26, 1935. Pg.85 #3379 Looking downstream toward No.1 raise and Nevada Spillway. Note drainage flume in foreground. Jul. 26, 1935. Pg.85 #3383 Looking into No.3 downstream plug, from the Nevada plug adit. Note forms for the first pour being built. Jul. 26, 1935.
Pg.88 #3401 Boulder Dam and Intake Towers, from Arizona side. Aug. 26, 1935. Pg.88 #3408 Looking upstream toward Nevada Spillway drainage flume and general area. Aug. 26, 1935. Pg.88 #3391 Looking upstream toward Boulder Lake, from Observation Point. Aug. 21, 1935. Pg.88 #3409 View taken from Arizona Intake Towers, looking toward Arizona Spillway. Note excavation for the float well supply line. Aug. 26, 1935.
Pg.90 #3417 View of Arizona side of lower portals clean-up. Aug. 26, 1935. Pg.90 #3397 Nevada construction adits, Valve House and plug adit portal. Note absence of upstream end of lower portal road tunnel. Aug. 21, 1935. Pg.90 #3412 View of Nevada side of lower portals clean-up. Aug. 26, 1935. Pg.90 #3431 View taken from downstream Nevada Plug adit, looking toward No.2 downstream plug. Aug. 27, 1935.
p.3 #888 Lower portals of Diversion tunnels No.3 and 4 during flood. Feb. 10, 1932 p.3 #896 Bucyrus Erie 43-B gas-air shovel was the only piece of equipment caught by the flood. Feb. 10, 1932. p.3 #884 Looking across river at lower portal of Diversion Tunnel No.3. Feb 10, 1932 p.3 #897 Looking across river from Arizona side at upper portals of diversion tunnels No.1 and 2. Truck bridge in foreground has been partially washed out. Feb. 10, 1932.
p.4 #795 Portion of gravel pits on Arizona side of the river, 11 miles above damsite. Hills in background are across the river in Nevada, 5 miles away. Jan. 16, 1932. p.4 #902 Close-up of drag line loading 30 cub yard Western side-dump car. Plymouth gasoline locomotive switching. Feb. 10, 1932. p.4 #906 Marion electric drag line with 5 cubic yard capacity bucket, loading gravel. Feb. 10, 1932. p.4 #904 First train loaded with gravel leaving gravel pits for screening plant. Feb. 10, 1932.
p.10 #1016 Gantry crane used in pouring concrete in invert section of upper Diversion Tunnel No.3. Mar. 18, 1932. p.10 #1019 View showing method of pouring concrete in invert section of tunnel lining. Mar. 18, 1932. p.10 #1018 view of invert forms in upper Diversion Tunnel No.3 showing method of pouring slabs. Trimming jumbo for aligning gauge of tunnels in background. Mar. 18, 1932. p.10 #1020 First 40 foot slab of concrete poured in lining diversion tunnels. Mar. 18, 1932.
p.12 #1055 Low level concrete mixing plant. View taken from cliffs on Arizona side of river. Mar. 28, 1932. p.12 #1113 Night view, looking upstream from below lower portals of diversion tunnels. Canyon presents a spectacular sight at night with myriads of lights. Apr. 8, 1932. p.12 #1058 Telephoto picture, similar to No.1055, to the left. Mar. 28, 1932. p.12 #1101 With the approach of annual spring rise in the river, the temporary truck bridge shown on right has been abandoned. Apr. 12, 1932.
p.19 #1431 Excavation for benches for movable cableway towers being carried on, near Lookout Point. Aug. 14, 1932. p.19 #1444 Workmen loading holes with dynamite, in preparation for blast on cableway bench excavation. Aug. 15, 1932. p.19 #1442 "powder-monkeys" load dynamite cartridges with electric primers at isolated points. Aug. 15, 1932. p.19 #1493 Preparing for blast which demolished Lookout Point, to make way for cableway bench excavation. Aug. 14, 1932.
p.23 #1725 Close-up of upper portal of Diversion Tunnels No. 3 & 4, during preparations for blast. Nov. 13, 1932. p.23 #1728 Close-up of upper portals of Diversion Tunnels No. 3 and 4, showing flow in diversion tunnel No.4, shortly after blast. Nov. 13, 1932. p.23 #1733 Dumping materials at temporary pile bridge to complete diversion of Colorado River. Nov. 13, 1932. p.23 #1737 Upper portals of Diversion Tunnels No. 3 & 4, and temporary dyke, after diversion of Colorado River was completed. Nov. 26, 1932.