Swift BOATING SHOT of water flowing by camera boat, construction barge and tree-covered banks in the distance. HAS of winch and winch operator as pilings are lowered into place. Cut to workers guiding winch operator as pilings are lowered into place. Cut back to winch operator. General shots of operation. Three MLSs from side and stern of McNamara construction barge in mid-stream. Two HASs of start of construction of causeway, truck dumping fill into water as large power shovel loads other trucks in foreground. Several shots of engineers at work on river bank. MLS of rapids on Saint Lawrence River, brush in foreground. Sequence showing cofferdam pilings being hoisted up by crane, being lowered into place as workmen stand by.