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Soo Canals:see Sault Sainte Marie CanalsSault Sainte Marie Canals,
two ship canals bypassing the rapids on the St. Marys River between Lake Superior and Lake Huron, at the cities of Sault Ste Marie, Mich. and Ont. The Canadian canal (1.4 mi/2.3 km long and 60 ft/18 m wide), which has one lock, was opened in 1895.
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