"Looking out of the lower portal of Diversion Tunnel # 2. Note the size of the men in the entrance. January 25th, 1932.
#844 A flash
of the light photograph of the interior of one is workers ion tunnels. The drilling jumbo
12' top at the tunnel face. The 12"" by January can be plainly seen.
# 837 One of the drilling. This view was posed , Jumbos ready for action.
as the swing shift outside the tunnel, just the upper portal of Diversion Tunnel #1. January 28th, 1932.
# 804 A telephoto view of the muck disposal area on the Arizona side, below the lower portals
Diversion Tunnels # 3 and # 4. January 19th, 1932.