KP-1511-R2 - Klamath Project. Steel in place, completed panels shown, screeds in place, steel men working. Paper is used to prevent curing compound getting on steel. Man with hose, who wets down subgrade prior to placing of concrete, not shown; Time approximately 2:00 P. M. July 18, 1947; Stacy - contractor; Photo by H. W. Sexton