room-and-pillar-system

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

room-and-pil|lar — «ROOM uhn PIHL uhr, RUM », adjective. of or designating a system of mining coal in which a series of rooms is cut into the coal bed, in each of which the miners leave columns of coal standing to help support the roof until they mine out a… …   Useful english dictionary

Pillar of Fire International — Zarephath Christian Church in Zarephath, New Jersey …   Wikipedia

Nuttallburg Coal Mining Complex and Town Historic District — U.S. National Register of Historic Places U.S. Historic district …   Wikipedia

Architecture and Civil Engineering — ▪ 2009 Introduction Architecture       For Notable Civil Engineering Projects in work or completed in 2008, see Table (Notable Civil Engineering Projects (in work or completed, 2008)).        Beijing was the centre of the world of architecture… …   Universalium

religious symbolism and iconography — Introduction       respectively, the basic and often complex artistic forms and gestures used as a kind of key to convey religious concepts and the visual, auditory, and kinetic representations of religious ideas and events. Symbolism and… …   Universalium

RELIGIOUS LIFE AND COMMUNITIES — Jews UNDER OTTOMAN RULE The Jews of the pre Zionist old yishuv, both sephardim (from the Orient) and ashkenazim (of European origin), dedicated their lives to the fulfillment of religious precepts: the study of the torah and the meticulous… …   Encyclopedia of Judaism

Automotive navigation system — A taxi equipped with GPS navigation device An automotive navigation system is a satellite navigation system designed for use in automobiles. It typically uses a GPS navigation device to acquire position data to locate the user on a road in the… …   Wikipedia

SODOM (modern Sedom) AND GOMORRAH — (Heb. וַעֲמֹרָה סְדֹם), two cities in the plain of the Jordan, usually mentioned   together and sometimes with Admah, Zeboiim, and Bela, which is identified with Zoar. The first biblical reference to them is in the account of the boundaries of… …   Encyclopedia of Judaism

Mill, John Stuart: Logic and metaphysics — J.S.Mill Logic and metaphysics John Skorupski ENLIGHTENMENT AND ROMANTICISM IN MILL’S PHILOSOPHY Mill’s importance as one of the major figures of nineteenth century politics and culture, and the current interest in him as a moral and political… …   History of philosophy

Association football tactics and skills — There are various individual skills and team tactics needed to play effective Association football. Football is in theory a very simple game, as illustrated by Kevin Keegan s famous assertion that his tactics for winning a match were to score… …   Wikipedia