BOATING SHOT of waves and rough water of Long Sault Rapids. Sequence showing kytoon (kite + ballon) being used over Long Sault Rapids, men taking readings, surveyors taking sights. Shot of rough water and waves of rapids. LS of freighter moving up very calm Saint Lawrence River. LS PAN from freighter in bypass channel to cofferdam. MS of fitter straddled across top cell of cofferdam. MCS of crane rope being attached to cell, of cell being lifted to be dropped beside others to form cofferdam. MS of man pounding cell into place as crane lowers it. TILT DOWN as giant crane drops cell into place. MS of welder burning hole through sheet of steel lying on ground. Shot of four workmen using canthooks to turn steel rail. FOLOW PAN as two workmen haul cable of hoist and attach it to above rail. Shot of three workers attaching cable, spar being hoisted skyward. MCS of man guiding spar into place. MS of crane doing the hoisting. LAS of man atop cofferdam placing spar in position for dropping.