depth of mining
61Canada — /kan euh deuh/, n. a nation in N North America: a member of the Commonwealth of Nations. 29,123,194; 3,690,410 sq. mi. (9,558,160 sq. km). Cap.: Ottawa. * * * Canada Introduction Canada Background: A land of vast distances and rich natural… …
62geology — /jee ol euh jee/, n., pl. geologies. 1. the science that deals with the dynamics and physical history of the earth, the rocks of which it is composed, and the physical, chemical, and biological changes that the earth has undergone or is… …
63Pacific Ocean — an ocean bordered by the American continents, Asia, and Australia: largest ocean in the world; divided by the equator into the North Pacific and the South Pacific. 70,000,000 sq. mi. (181,300,000 sq. km); greatest known depth, 35,433 ft. (10,800… …
64Kimberley, Northern Cape — Kimberley City centre seen over the Big Hole …
65Contributors — ▪ 2000 Adams, Andy. Editor and Publisher, Sumo World. Author of Sumo; Sumo World Record Book. • sports and games: Judo; Wrestling: Sumo Ahn, Ki suk. Assistant Editor, Shindonga of Donga Ilbo. • biographies (in part) Alder,… …
66Rammelsberg — The mining museum on the slopes of the Rammelsberg Elevation 635 m (2,083 ft) …
67hand tool — any tool or implement designed for manual operation. * * * Introduction any of the implements used by craftsmen in manual operations, such as chopping, chiseling, sawing, filing, or forging. Complementary tools, often needed as auxiliaries to… …
68Dredging — Dredge redirects here. For other uses, see Dredge (disambiguation). Dredgers redirects here. For the German municipality, see Dreggers. Dredging is an excavation activity or operation usually carried out at least partly underwater, in shallow… …
69Tajchy — (singular: tajch) are artificial water reservoirs in the Štiavnica Mountains, in central Slovakia. Most of them were built in order to provide energy for the silver mines of Banská Štiavnica in the 18th century. At their height, tajchy comprised… …
70Laptev Sea — Basin countries Russia Surface area 700,000 km2 (270,000 sq mi) Average depth …
