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Thompson,river, 304 mi (489 km) long, formed by the junction of the North Thompson and the South Thompson rivers at Kamloops, S British Columbia, and flowing W and S to the Fraser River at Lytton. The North Thompson is usually considered part of the main stream. The river was explored (1808) by Simon Fraser and named by him for David Thompson, a fellow explorer.
Thompson,city (1991 pop. 14,977), central Man., Canada, on the Burntwood River. A mining town, it developed after large nickel deposits were discovered in the area in 1956.
a city in Canada, in northwestern Manitoba. Population, 19,000 (1971). Thompson is a center for the mining, smelting, and refining of nickel. The nickel plant located in the city has an annual capacity of 100,000 tons. The ore is mined primarily from the large Thompson field, and also from the Soab Lake and Pipe Lake fields.