Big Creek, Florence Lake Dam - Day's Work Joint Repair April 1940. Extensive chipping necessary on Arch #40. Joint elevation 7296, centerline to 12' left in order to remove disintegrated concrete. Average depth of chipping 3.5 to 4 inches.
Southern California Edison Photographs and Negatives G. Haven Bishop (SCE) Southern California Edison Photographs and Negatives, Huntington Digital Library
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