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60 SECRET Cape Breton Island rise in places to 1,500 feet part of the district of Keewatin. In general, above sea level. the Shield is characterized by low rounded Newfoundland, which was recently annexed hills, lakes, swamps, and rivers, which in many to Canada as a province, is separated from the cases, are the routes of travel. The elevation rest of the Maritime Region by the Gulf of St. of the eastern part of the Shield ranges be- Lawrence. Most of the island is a plateau tween 1,000 and 2,000 feet above sea level, ex- which slopes from elevations of 2,500 feet in cept for the mountains in eastern Labrador the west to 700 feet in the east. The rolling which exceed 5,000 feet. The Laurentian surface of the plateau is dotted with lakes and Mountains, at the southeastern edge of the swamps. In general, the drainage is to the Shield, reach elevations of over 2,000 feet. east, but the Humber and St. George rivers The western part of the Shield averages only flow west through the mountains to the Gulf about 500 feet above sea level. Immediately of St. Lawrence. south of Hudson Bay is a lowland 100 to 200 Off the east coast of the Maritime Region miles wide. are the Newfoundland Banks, a broad con- The Shield is rich in minerals, and mines tinental shelf with shallow water that forms are scattered throughout the area. Almost one of the richest fishing areas in the world. all the nickel mined in Canada comes from Cod, halibut, herring, and mackerel are the the Sudbury district near the southern edge chief commercial fish, and the lobster catch of the Shield, and some copper is mined along is also important. with the nickel. The Madoc area of Ontario, 60 miles northwest of Kingston, is the chief b. St. Lawrence Lowland. Canadian talc mining center. Farther north From Quebec west to Lake Huron, the St. in Ontario, in the vicinity of Porcupine and Lawrence River and Lakes Ontario and Erie Kirkland lakes, gold is mined. Copper, zinc, are bordered by a lowland for 600 miles. and silver mines are located at Rouyan and More than half the population of Canada is Noranda in western Quebec and at Flin Flon concentrated in this region. Early settlers in western Manitoba. moved up the St. Lawrence River because it Much of the hydroelectric power that has was the easiest route to the interior of the been developed in the southern part of the country. Later the St. Lawrence Lowland Shield is used in the industrial St. Lawrence developed into the chief manufacturing and Lowland. Large additional sources of water industrial region of Canada, largely because power, however, are still undeveloped. Lum- of the accessibility to markets, cheap trans- bering is an important industry in the Shield. portation on the St. Lawrence River and the The coniferous forest, which covers the south- Great Lakes, and the availability of water ern half of the region, is the chief source of power, lumber, minerals, and grain. The two pulpwood in Canada. Agriculture is of minor largest cities in Canada, Montreal and importance, owing to the hilly terrain, poor Toronto, as well as the capital, Ottawa, are drainage, and severe climate. The largest located in this region. agricultural area is in the Clay Belt in west- The St. Lawrence Lowland is also an im- central Quebec and east-central Ontario. portant mixed farming area. Dairy farming The produce is sold in nearby lumber and predominates, but garden crops and fruits are mining towns. also produced. Southern Ontario is an im- d. Interior Plains Region. portant fruit-growing area. The Interior Plains or Prairie Region is a c. The Canadian Shield. northward extension of the Great Plains of The Canadian Shield surrounds Hudson the United States. The region includes Bay and extends south to the St. Lawrence southwestern Manitoba, Saskatchewan, and Lowland and east through Labrador. It in- Alberta, and extends northward through the cludes Labrador; those parts of Quebec and District of Mackenzie to the Beaufort Sea. Ontario north of the St. Lawrence Lowland; The elevation increases gradually from 800 northern Manitoba and Saskatchewan; and feet at lake Winnipeg to 3,400 feet in the foot-

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    "ocrText": "60\nSECRET\nCape Breton Island rise in places to 1,500 feet\npart of the district of Keewatin. In general,\nabove sea level.\nthe Shield is characterized by low rounded\nNewfoundland, which was recently annexed\nhills, lakes, swamps, and rivers, which in many\nto Canada as a province, is separated from the\ncases, are the routes of travel. The elevation\nrest of the Maritime Region by the Gulf of St.\nof the eastern part of the Shield ranges be-\nLawrence. Most of the island is a plateau\ntween 1,000 and 2,000 feet above sea level, ex-\nwhich slopes from elevations of 2,500 feet in\ncept for the mountains in eastern Labrador\nthe west to 700 feet in the east. The rolling\nwhich exceed 5,000 feet. The Laurentian\nsurface of the plateau is dotted with lakes and\nMountains, at the southeastern edge of the\nswamps. In general, the drainage is to the\nShield, reach elevations of over 2,000 feet.\neast, but the Humber and St. George rivers\nThe western part of the Shield averages only\nflow west through the mountains to the Gulf\nabout 500 feet above sea level. Immediately\nof St. Lawrence.\nsouth of Hudson Bay is a lowland 100 to 200\nOff the east coast of the Maritime Region\nmiles wide.\nare the Newfoundland Banks, a broad con-\nThe Shield is rich in minerals, and mines\ntinental shelf with shallow water that forms\nare scattered throughout the area. Almost\none of the richest fishing areas in the world.\nall the nickel mined in Canada comes from\nCod, halibut, herring, and mackerel are the\nthe Sudbury district near the southern edge\nchief commercial fish, and the lobster catch\nof the Shield, and some copper is mined along\nis also important.\nwith the nickel. The Madoc area of Ontario,\n60 miles northwest of Kingston, is the chief\nb. St. Lawrence Lowland.\nCanadian talc mining center. Farther north\nFrom Quebec west to Lake Huron, the St.\nin Ontario, in the vicinity of Porcupine and\nLawrence River and Lakes Ontario and Erie\nKirkland lakes, gold is mined. Copper, zinc,\nare bordered by a lowland for 600 miles.\nand silver mines are located at Rouyan and\nMore than half the population of Canada is\nNoranda in western Quebec and at Flin Flon\nconcentrated in this region. Early settlers\nin western Manitoba.\nmoved up the St. Lawrence River because it\nMuch of the hydroelectric power that has\nwas the easiest route to the interior of the\nbeen developed in the southern part of the\ncountry. Later the St. Lawrence Lowland\nShield is used in the industrial St. Lawrence\ndeveloped into the chief manufacturing and\nLowland. Large additional sources of water\nindustrial region of Canada, largely because\npower, however, are still undeveloped. Lum-\nof the accessibility to markets, cheap trans-\nbering is an important industry in the Shield.\nportation on the St. Lawrence River and the\nThe coniferous forest, which covers the south-\nGreat Lakes, and the availability of water\nern half of the region, is the chief source of\npower, lumber, minerals, and grain. The two\npulpwood in Canada. Agriculture is of minor\nlargest cities in Canada, Montreal and\nimportance, owing to the hilly terrain, poor\nToronto, as well as the capital, Ottawa, are\ndrainage, and severe climate. The largest\nlocated in this region.\nagricultural area is in the Clay Belt in west-\nThe St. Lawrence Lowland is also an im-\ncentral Quebec and east-central Ontario.\nportant mixed farming area. Dairy farming\nThe produce is sold in nearby lumber and\npredominates, but garden crops and fruits are\nmining towns.\nalso produced. Southern Ontario is an im-\nd. Interior Plains Region.\nportant fruit-growing area.\nThe Interior Plains or Prairie Region is a\nc. The Canadian Shield.\nnorthward extension of the Great Plains of\nThe Canadian Shield surrounds Hudson\nthe United States. The region includes\nBay and extends south to the St. Lawrence\nsouthwestern Manitoba, Saskatchewan, and\nLowland and east through Labrador. It in-\nAlberta, and extends northward through the\ncludes Labrador; those parts of Quebec and\nDistrict of Mackenzie to the Beaufort Sea.\nOntario north of the St. Lawrence Lowland;\nThe elevation increases gradually from 800\nnorthern Manitoba and Saskatchewan; and\nfeet at lake Winnipeg to 3,400 feet in the foot-"
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