mine pillar
Смотреть что такое "mine pillar" в других словарях:
pillar — [pil′ər] n. [ME piler < OFr < VL * pilare < L pila, column] 1. a long, slender, vertical structure used to support a superstructure; column 2. such a column standing alone as a monument 3. anything like a pillar in form or function, as a … English World dictionary
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 — pillared, adj. pillarlike, adj. /pil euhr/, n. 1. an upright shaft or structure, of stone, brick, or other material, relatively slender in proportion to its height, and of any shape in section, used as a building support, or standing alone, as… … Universalium
pillar — pil•lar [[t]ˈpɪl ər[/t]] n. 1) archit. an upright shaft or structure, of stone, brick, or other material, relatively slender in proportion to its height, and of any shape in section, used as a building support, or standing alone, as for a… … From formal English to slang
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
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
Crandall Canyon Mine — Coordinates: 39°27′36″N 111°10′04″W / 39.460000°N 111.167639°W / 39.460000; 111.167639 The Crandall Canyon Mine, formerly Genwal … Wikipedia
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
Naval mine — Polish wz. 08/39 contact mine. The protuberances around the top of the mine, called Hertz horns, are part of the detonation mechanism … Wikipedia
Bat Cave mine — The Bat Cave guano mine, located in the western Grand Canyon of Arizona at river mile 266, 800 ft. above Lake Mead, was an unusual, expensive and noteworthy mining operation. The cave was apparently discovered in the 1930s by a passing boater.… … Wikipedia
Copper Cliff South Mine — is an underground nickel mine in Copper Cliff, Ontario, Canada. It is owned and operated by Vale Inco. Part of the mine is located under the town of Copper Cliff, which means that additional care must be put into the crown pillar. [1] See also… … Wikipedia
