vertical mining rate
41Belgium — /bel jeuhm/, n. a kingdom in W Europe, bordering the North Sea, N of France. 10,203,683; 11,779 sq. mi. (30,508 sq. km). Cap.: Brussels. French, Belgique /bel zheek /; Flemish, België /bel khee euh/. * * * Belgium Introduction Belgium Background …
42Guinea — Guinean, adj., n. /gin ee/, n. 1. a coastal region in W Africa, extending from the Gambia River to the Gabon estuary. 2. Formerly, French Guinea. an independent republic in W Africa, on the Atlantic coast. 7,405,375; ab. 96,900 sq. mi. (251,000… …
43metallurgy — metallurgic, metallurgical, adj. metallurgically, adv. metallurgist /met l err jist/ or, esp. Brit., /meuh tal euhr jist/, n. /met l err jee/ or, esp. Brit., /meuh tal euhr jee/, n. 1. the technique or science of working or heating metals so as… …
44Sri Lanka — Sri Lankan, adj., n. /sree lahng keuh, lang keuh, shree / an island republic in the Indian Ocean, S of India: a member of the Commonwealth of Nations. 18,762,075; 25,332 sq. mi. (65,610 sq. km). Cap.: Colombo. Formerly, Ceylon. Arabic, Serendip.… …
45Overpopulation — Graph of human population from 10,000 BC–2000 AD showing the unprecedented population growth since the 19th century Overpopulation is a condition where an organism s numbers exceed the carrying capacity of its habitat. The term often refers to… …
46Mongolia — /mong goh lee euh, mon /, n. 1. a region in Asia including Inner Mongolia of China and the Mongolian People s Republic. 2. Also, Nei Monggol. See Inner Mongolia. 3. Outer, former name of Mongolian People s Republic. * * * Mongolia Introduction… …
47Norway — /nawr way/, n. Norwegian, Norge. a kingdom in N Europe, in the W part of the Scandinavian Peninsula. 4,404,456; 124,555 sq. mi. (322,597 sq. km). Cap.: Oslo. * * * Norway Introduction Norway Background: Despite its neutrality, Norway was not able …
48Life Sciences — ▪ 2009 Introduction Zoology In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …
49West Virginia — This article is about the U.S. state of West Virginia. For other uses, see West Virginia (disambiguation). State of West Virginia …
50geology — /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… …
