Map of the Great Lakes region of the United States and the St. Lawrence River, river to Atlantic Ocean. Describes the operation of “locks” that allow a ship to be lifted to a higher elevation to reach a larger body of water.
Scenes of earth moving, heavy construction sites, heavy construction equipment including dragline excavator (crane with drag-line bucket), shovel excavator, bulldozer, dynamite blasting of rock, off-road rock truck, tower crane used to pour concrete, rock drill, rock drilling and blasting, construction of power dam, scene of a mile long coffer dam. Earth mover wheel type tractor-scraper at work.
Scenes of houses being moved and re-located. Images of large grain elevator on bank of seaway, scenes of electrical power images depicting the economic benefits of the St. Lawrence Seaway.
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