Pg.39 #2715 Second millionth yard being placed in Boulder Dam. June 2nd 1934. Pg.39 #2741 View of the Drum Gates in the Arizona Spillway. June 21st, 1934. Pg.39 #2744 Top of Boulder Dam, from the Nevada side. Arizona Intake Towers in Background. June 22nd, 1934. Pg.39 #2742 View of Nevada Spillway. June 21st, 1934.