pillar extraction
1Room 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… …
2coal 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… …
3Coal mining — Men leaving a UK colliery at the close of a shift Surface coal mining in Wyo …
4Subsidence — For subsidence in the atmosphere, see subsidence (atmosphere). A road destroyed by subsidence and shear, near Castleton, Derbyshire …
5Morupule Colliery — Location …
6Погашение — в горном делe (a. mine abandoning, pillar extraction; н. Rauben, Abwerfen; ф. liquidation de la galerie, l extraction des abandons; и. liquidacion de galerias donde trabajos estanterminados) цикл подземных работ по ликвидации горн.… …
7Canton, Illinois — Coordinates: 40°33′28″N 90°2′3″W / 40.55778°N 90.03417°W / 40.55778; 90.03417 …
8Scarborough, New South Wales — Scarborough is a small town on the south coast of New South Wales, Australia. It sits in the Northern Illawarra region, south of Stanwell Park and north of Wollongong on a narrow stretch between the Illawarra escarpment and sea cliffs. It s… …
9разбуривание целиков — — [http://slovarionline.ru/anglo russkiy slovar neftegazovoy promyishlennosti/] Тематики нефтегазовая промышленность EN pillar extraction drilling …
10mining — /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… …
