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retreating mining

См. также в других словарях:

  • 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

  • Underground mining (soft rock) — refers to a group of underground mining techniques used to extract coal, oil shale and other minerals or geological materials from sedimentary ( soft ) rocks. Because deposits in sedimentary rocks are commonly layered and relatively less hard,… …   Wikipedia

  • Springhill mining disaster — Mine shed at Springhill, NS The term Springhill mining disaster can refer to any of three separate Canadian mining disasters which occurred in 1891, 1956, and 1958 in different mines within the Springhill coalfield, near the town of Springhill in …   Wikipedia

  • Retreat mining — is a term used to reference the final phase of an underground mining technique known as room and pillar mining. This involves excavating a room or chamber while leaving behind pillars of material for support. This excavation is carried out in a… …   Wikipedia

  • India — /in dee euh/, n. 1. Hindi, Bharat. a republic in S Asia: a union comprising 25 states and 7 union territories; formerly a British colony; gained independence Aug. 15, 1947; became a republic within the Commonwealth of Nations Jan. 26, 1950.… …   Universalium

  • World War II — the war between the Axis and the Allies, beginning on September 1, 1939, with the German invasion of Poland and ending with the surrender of Germany on May 8, 1945, and of Japan on August 14, 1945. Abbr.: WWII * * * or Second World War (1939–45)… …   Universalium

  • Poland — /poh leuhnd/, n. a republic in E central Europe, on the Baltic Sea. 38,700,291; ab. 121,000 sq. mi. (313,400 sq. km). Cap.: Warsaw. Polish, Polska. * * * Poland Introduction Poland Background: Poland is an ancient nation that was conceived around …   Universalium

  • Germany — /jerr meuh nee/, n. a republic in central Europe: after World War II divided into four zones, British, French, U.S., and Soviet, and in 1949 into East Germany and West Germany; East and West Germany were reunited in 1990. 84,068,216; 137,852 sq.… …   Universalium

  • Second Boer War — Infobox Military Conflict conflict=Second Anglo Boer War partof=the Boer Wars caption=Boer guerrillas during the Second Boer War date=11 October 1899 ndash; 31 May 1902 place=South Africa casus belli=The Jameson Raid, 1895 96 [Thomas Pakenham,… …   Wikipedia

  • Hungary — /hung geuh ree/, n. a republic in central Europe. 9,935,774; 35,926 sq. mi. (93,050 sq. km). Cap.: Budapest. Hungarian, Magyarország. * * * Hungary Introduction Hungary Background: Hungary was part of the polyglot Austro Hungarian Empire, which… …   Universalium

  • Gulf War — This article is about the war in 1990/91. For other wars of that name, see Persian Gulf War (disambiguation). Operation Desert Storm redirects here. For the video game, see Operation: Desert Storm (video game). Gulf War …   Wikipedia

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