Bridges--South Carolina; Bridges -- Design and Construction; John P. Grace Memorial Bridge (Charleston, S.C.); Timber; Railroads; Ships
Images #8, 10, 12 (2.75" x 4.5"): Caption under all photos: Dec. 2, 1928. Three views of pneumatic caisson for anchor pier #10, Cooper River Span, which tilted to an angle 29 [degrees] from the vertical. Seven negro 'sand-hogs' trapped and drowned."
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