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thickness of a coal seam

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  • Coal mining — Men leaving a UK colliery at the close of a shift Surface coal mining in Wyo …   Wikipedia

  • 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

  • Coal bed methane extraction — (CBM extraction) is a method for extracting methane from a coal deposit. Contents 1 Basic principles 2 Areas with coal bed methane extraction 3 Measuring the gas content of coal …   Wikipedia

  • Coal Seams of the South Yorkshire Coalfield — The coal seams worked in the South Yorkshire coalfield lie mainly in the middle coal measures. These are a series of mudstones, shales, sandstones, and coal seams laid down during the Carboniferous period about 350 million years ago. The total… …   Wikipedia

  • coal — coalless, adj. /kohl/, n. 1. a black or dark brown combustible mineral substance consisting of carbonized vegetable matter, used as a fuel. Cf. anthracite, bituminous coal, lignite. 2. a piece of glowing, charred, or burned wood or other… …   Universalium

  • Coal sampling —   The collection and proper storage and handling of a relatively small quantity of coal for laboratory analysis. Sampling may be done for a wide range of purposes, such as: coal resource exploration and assessment, characterization of their… …   Energy terms

  • Problems in coal mining — Coal mining cannot be done everywhere with coal, due to certain restrictions.ProblemsDip of strataDue to current machinery, a permament feedback is required.FaultingIf a fault hits a rock with a coal seam inside, the coal seam moves. Machinery… …   Wikipedia

  • seam — I. noun Etymology: Middle English seem, from Old English sēam; akin to Old English sīwian to sew more at sew Date: before 12th century 1. a. the joining of two pieces (as of cloth or leather) by sewing usually near the edge b. the stitching used… …   New Collegiate Dictionary

  • Underground coal gasification — (UCG) is an in situ gasification process carried out in non mined coal seams using injection and production wells drilled from the surface, which enables the coal to be converted into product gas. The process is flexible in operation and is… …   Wikipedia

  • Big Pit National Coal Museum — Coordinates: 51°46′21″N 3°06′18″W / 51.7724°N 3.1050°W / 51.7724; 3.1050 …   Wikipedia

  • Kuznetsk Coal Basin — ▪ region, Russia byname  Kuzbass,  Russian  Kuznetsky Ugolny Basseyn,         one of the largest producing coalfields of (coal mining) Russia, in Kemerovo oblast (province), south central Russia. It lies in the basin of the Tom River between the… …   Universalium

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