P12-201-4461 NA Klamath Project, OR-CA. PP EE--view looking south. Hanging flap gates on PP EE outlet structure, using Pettibone 30 Crane. Note: Curing compound had been sand blasted prior to flap gate installation, so dry pack 1"± behind flap gate will take hold. Steel placer putting in bottom mat steel for outlet transition; October 1977; USBR photo by D.J. Kline