underground coal

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• 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

• 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 — Sedimentary Rock Anthracite coal Composition Primary carbon Secondary hydrogen, sulfur …   Wikipedia

• Coal gasification — is the process of producing coal gas, a type of syngas–a mixture of carbon monoxide (CO), hydrogen (H2), carbon dioxide (CO2) and water vapour (H2O)–from coal. Coal gas, which is a combustible gas, was traditionally used as a source of energy for …   Wikipedia

• Coal companies of Australia — Contents 1 Anglo Coal Australia Ltd 1.1 Anglo Coal Callide Mine 1.2 Anglo Coal Capcoal Mine …   Wikipedia

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

• Coal seam fire — A coal seam fire near Denniston, New Zealand A coal seam fire or mine fire is the underground smouldering of a coal deposit, often in a coal mine. Such fires have economic, social and ecological impacts. They are often started by lightning, grass …   Wikipedia

• Coal in Australia — Australian Energy resources and major export ports …   Wikipedia

• Underground mining methods —   A drift mine is driven horizontally into coal that is exposed or accessible in a hillside. In a hydraulic mine, high pressure water jets break the coal from a steeply inclined, thick coalbed that would be difficult to mine with the usual… …   Energy terms

• Coal hole — A selection of coal hole covers from Gordon Square, London and surrounding streets A coal hole is a hatch in the pavement (sidewalk, in US usage) above an underground coal bunker.[1] They are sometimes found outside houses that existed during the …   Wikipedia

• coal seam gas mine — noun a facility for extracting coal seam gas from an underground coal seam for processing and delivery as a source of energy …