CN-12-201-584NA Klamath Project - Oregon-California. Note tripod used by drill crew in obtaining core samples of foundation material. Samples were obtained as part of Safety of Dams review; September 1969; USBR photo by T. J. Rosten
Original photograph: 13 x 10 cm, color photograph, caption under photo reads “CN-12-201-584NA Klamath Project - Oregon-California View of right abutment of Gerber Dam. Note tripod used by drill crew in obtaining core samples of foundation material. Samples were obtained as part of Safety of Dams review. September 1969 USBR photo by T. J. Rosten" from Black Binders Digital reproduction of photograph: CN-12-201-584NA Klamath Project - Oregon-California, Black Binders, Bureau of Reclamation