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II parts of the world from Duluth’s busy port. The Great Lakes Area... The Great Lakes area, bounded generally on the north by Canada and on the south by the United States, is home to probably the greatest industrial complex in the world. Steel plants here produce more than 30 percent of the world’s ssteel, calling upon the iron, Coal, petroleum and limestone resources of th vast harvests of grain, transported, in large measure, by way of the lakes. The variety of general cargo that moves on the Great Lakes and the St. Lawrence Seaway is both diverse and considerable in volume. With an area of about 1, ( ‘th of North America) and of about 65 million, the region produces about 78 percent of North America’s steel and more than 40 percent of its f food and feed. To handl at Lakes traffic Ived a jal type of vessel, the North American “laker” These vary in size, the lerpectones 1,000 feet long and capable of carrying up to 60,000 tons of iron ore or 1,700,000 bushels of grain. Many of the world’s merchant ships also trade on the Great Lakes, entering via the St. Lawrence Seaway, opened in 1959. The construction of large locks and the deepening em Duluth to Montreal has helped bring ships of all nations to our doorste From the heartland of ‘America to the heartland of the world, we dedicate this book!