p.18 #1131 Detail picture of side-wall "jumbo" used in placing 3ft. thick lining in diversion tunnels. Side wings are jacked into place, and concrete is poured thru ports by a traveling crane and 2yd. buckets. Apr. 18, 1932. p.18 #1202 First "jumbo" for pouring concrete lining in top or arch section of tunnels was erected on "beach" in front of tunnel No.2 and transported across river in sections by cableway. May 20, 1932. p.18 #1132 This view and No.1131 show forms set for first side-wall pour in upper portal of tunnel No.3. Form is 80 feet long and consists of four 20ft. sections bolted together. Note size of man in upper right. Apr. 29, 1932.
Pg.93 #3467 Looking downstream from Nevada side, showing Boulder Dam, Spillways, Intake Towers, etc. Note general clean-up and road work; also, Intake Tower lanterns in place. Sept. 27, 1935. Pg.93 #3471 Looking upstream toward Nevada Spillway Drainage Flume, and general area. Sept. 27, 1935. Pg.93 #3464 Looking downstream toward Arizona Spillway. Note general road work, curbs in place and guard rails being installed. Sept. 26, 1935. Pg.93 #3465 From Arizona Spillway Gate House, looking upstream. Note float well supply line finished and construction on upstream abutment wall. Sept. 9, 1935
Pg.75 #3293 View from the Nevada Utility Tower of Boulder Dam, showing the Memorial Day exercises in connection with the unveiling of the plaque commemorating the men who gave their lives in the construction of Boulder Dam. May 30, 1935. Pg.75 #3287 On crest of Boulder Dam, looking toward the Nevada side, showing final pour in the slot, which practically completes the concrete in Boulder Dam. May 29, 1935. Pg.75 #3298 View of Boulder Dam, from the Nevada side. The road, towers, and parapets are completed. June 1, 1935. Pg.75 #3282 Looking upstream at No.6 Intake Tower Top. Note the method of lowering the trash tracks into their respective slots. May 27, 1935.