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Sault Sainte Marie Canals

(Encyclopedia)Sault 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...

Keweenaw

(Encyclopedia)Keweenaw kēˈwĭnô [key], peninsula, 60 mi (97 km) long, projecting NE from the W Upper Peninsula, NW Mich., into Lake Superior. Portage Lake and a connecting ship canal cut across the middle of the...

Macomb, Alexander

(Encyclopedia)Macomb, Alexander məkōmˈ [key], 1782–1841, American army officer, b. Detroit, Mich. He entered the army in 1799. In the War of 1812, as brigadier general in command at Plattsburgh, N.Y., in the a...

Three Gorges Dam

(Encyclopedia)Three Gorges Dam, 607 ft (185 m) high and 7,575 ft (2,309 m) long, on the Chang (Yangtze) River, central Hubei prov., China, 30 mi (48 km) W of Yichang. The largest concrete structure in the world, th...

Ojibwa

(Encyclopedia)Ojibwa chĭpˈəwäˌ, –wə [key], group of Native North Americans whose language belongs to the Algonquian branch of the Algonquian-Wakashan linguistic stock (see Native American languages). Their ...

Dollier de Casson, François

(Encyclopedia)Dollier de Casson, François fräNswäˈ dôlyāˈ də käsôNˈ [key], 1636–1701, priest and explorer in Canada, b. near Nantes, France. In 1657 he entered the seminary of Saint-Sulpice, Paris, and...

Thunder Bay

(Encyclopedia)Thunder Bay, city (1991 pop. 113,946), SW Ont., Canada, on Thunder Bay inlet of Lake Superior. The city was created in 1970 by the amalgamation of the twin cities of Fort William and Port Arthur and t...

Saint Lawrence

(Encyclopedia)Saint Lawrence, one of the principal rivers of North America, 744 mi (1,197 km) long. It issues from the northeastern end of Lake Ontario and flows northeast, first along the U.S.-Canadian border, the...

Escalante, Silvestre Vélez de

(Encyclopedia)Escalante, Silvestre Vélez de sēlvāˈstrā vāˈlāth dā āskälänˈtā [key], fl. 1769–79, Spanish explorer in the American Southwest and Far West, a Franciscan missionary. He was in charge of...

hematite

(Encyclopedia)hematite hĕmˈətīt [key], mineral, an oxide of iron, Fe2O3, containing about 70% metal, occurring in nature in red to reddish-brown earthy masses and in steel-gray to black crystalline forms. Hemat...