pillar extracting

См. также в других словарях:

• room-and-pillar — | ̷ ̷ ̷ ̷| ̷ ̷ ̷ ̷ adjective : bord and pillar * * * /roohm euhn pil euhr, room /, adj. Mining. noting a means of extracting coal or other minerals from underground deposits by first cutting out rooms, then robbing the pillars between them;… …   Useful english dictionary

• room-and-pillar — /roohm euhn pil euhr, room /, adj. Mining. noting a means of extracting coal or other minerals from underground deposits by first cutting out rooms, then robbing the pillars between them; pillar and breast. Cf. longwall. * * * …   Universalium

• mining — /muy ning/, n. 1. the act, process, or industry of extracting ores, coal, etc., from mines. 2. the laying of explosive mines. [1250 1300; ME: undermining (walls in an attack); see MINE2, ING1] * * * I Excavation of materials from the Earth s… …   Universalium

• 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

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• small arm — small armed, adj. Usually, small arms. a firearm designed to be held in one or both hands while being fired: in the U.S. the term is applied to weapons of a caliber of up to one in. (2.5 cm). [1680 90] * * * ▪ military technology Introduction… …   Universalium

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• literature — /lit euhr euh cheuhr, choor , li treuh /, n. 1. writings in which expression and form, in connection with ideas of permanent and universal interest, are characteristic or essential features, as poetry, novels, history, biography, and essays. 2.… …   Universalium