"1319 The danger of high water having passed for 1932, the concrete arch coffer dams are being blasted out of the lower portals of diversion tunnels. View shows Diversion Tunnel No. 2 July 15th, 1932.
1337 A protecting dike of rock is left between the open cut excavation and the river at the lower portal of Diversion Tunnel No. 2. July 16th, 1932.
1333 Workmen disembarking from transport trucks at the upper portals, and going to work on the swing shift. July 16th, 1932.
1353 Low Level Concrete Mixing Plant, showing method of conveying concrete, both in 2-yard buckets and 4-yard agitators, cement is being unloaded by pneumatic suction from box cars on the left, and conveyed through pipes shown, to bins above. July 19th, 1932."