Bridges--South Carolina; Bridges -- Design and Construction; John P. Grace Memorial Bridge (Charleston, S.C.); Timber; Railroads; Ships
Image #531 (4.5" x 2.75'): "7-9-29. Lowering the first main engine from the deck of the Cooper River Span to a lighter below. Weight of engine 31 tons, plus rigging. Two sets wire cable falls of 5 parts each, leading off of the two top drums. Clutch out, frictions in, and lowered by foot brakes. Engine running to allow use of clutch if necessary."; Image #532 (2.75" x 4.5"): "7-9-29. Same as 531. Note horizontal leads of cable falls, thru snatch blocks, instead of straight up off of drums."; Image #533 (2.75" x 4.5"): "7-11-29. Removing rigging, riveting, laying forms, pouring concrete deck, & painting overhead - all at once!"
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