P12-201-4431 NA Klamath Project, OR-CA. Ady Canal--Initial shoring installed to prevent further failure of the east shoring at Hwy 97. This was installed on Aug. 17 prior to the tunnel shield fully exiting the tunnel. The fore part of the shield is visible as it exits through the shoring; August 18, 1977; USBR photo by D.J. Kline