- pillar coal
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уголь в целике
English-Russian dictionary of geology. 2011.
pillar coal
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Coal mining — Men leaving a UK colliery at the close of a shift Surface coal mining in Wyo … Wikipedia
coal mining — Coal was very important in the economic development of Britain. It was used as fuel in the factories built during the Industrial Revolution and continued to be important until the 1980s. The main coalfields are in north east England, the north… … Universalium
Coal mine bump — A coal mine bump (also called a bump, a mine bump, or a mountain bump) is a term used to describe a seismic jolt occurring within a mine. The term refers to the explosive collapse of a wall or one or more support pillars,[1] sometimes called a… … Wikipedia
pillar — n. 1 a a usu. slender vertical structure of wood, metal, or esp. stone used as a support for a roof etc. b a similar structure used for ornament. c a post supporting a structure. 2 a person regarded as a mainstay or support (a pillar of the… … Useful english dictionary
pillar — I. noun Etymology: Middle English piler, from Anglo French, from Medieval Latin pilare, from Latin pila Date: 13th century 1. a. a firm upright support for a superstructure ; post b. a usually ornamental column or shaft; especially one standing… … New Collegiate Dictionary
pillar robbing — noun : the mining and removal of pillars after the main coal or ore body has been removed called also pillar drawing … Useful english dictionary
Room and pillar — (also called bord and pillar) is a mining system in which the mined material is extracted across a horizontal plane while leaving pillars of untouched material to support the roof overburden leaving open areas or rooms underground. It is usually… … Wikipedia
History of coal mining — Due to its abundance, coal has been mined in various parts of the world throughout history and continues to be an important economic activity today. Compared to wood fuels, coal yields a higher amount of energy per mass and could be obtained in… … Wikipedia
From pillar to post — Post Post, n. [AS., fr. L. postis, akin to ponere, positum, to place. See {Position}, and cf. 4th {Post}.] 1. A piece of timber, metal, or other solid substance, fixed, or to be fixed, firmly in an upright position, especially when intended as a… … The Collaborative International Dictionary of English
European Coal and Steel Community — Danish: Det Europæiske Kul og Stålfællesskab Dutch … Wikipedia
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