Hells Canyon Dam hearing
U.S. Engineers hydraulic laboratory at Bonneville
U.S. Engineers hydraulic laboratory at Bonneville
Cofferdam at Bonneville Dam
Cofferdam at Bonneville Dam
Cofferdam at Bonneville Dam
McNary Dam construction
McNary Dam construction
McNary Dam construction
McNary Dam construction workers
McNary Dam construction workers
McNary Dam construction workers on ferry
McNary Dam worker, during construction
McNary Dam construction
McNary Dam construction
McNary Dam construction
McNary Dam construction
McNary Dam construction scene
McNary Dam construction
McNary Dam construction
McNary Dam construction