thick bed mining

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• Dartmoor tin-mining — The wheelpit at Huntingdon mine The Dartmoor tin mining industry is thought to have originated in pre Roman times,[1] and continued right through to the 20th century. From the 12th century onwards tin mining was regulated by a Stannary Parliament …   Wikipedia

• Copper mining in the United States — US primary copper production 1900 2008. Source: USGS …   Wikipedia

• Underground mining equipment —   A coal cutting machine is used in conventional mining to undercut, top cut, or shear the coal face so that coal can be fractured easily when blasted. It cuts 9 to 13 feet into the bed.   Continuous auger machine is used in mining coalbeds less… …   Energy terms

• Pebble bed reactor — Sketch of a pebble bed reactor in Italian …   Wikipedia

• Longwall mining —   An automated form of underground coal mining characterized by high recovery and extraction rates, feasible only in relatively flat lying, thick, and uniform coalbeds. A high powered cutting machine is passed across the exposed face of coal,… …   Energy terms

• Geology of the Australian Capital Territory — Australia grew around three fused pieces of very ancient continental crust (cratons). The geology of the Australian Capital Territory includes rocks dating from the Ordovician around 480 million years ago, whilst most rocks are from the Silurian …   Wikipedia

• Minden Coalfield — This spoil tip (the Schwarzer Hucken i.e. the Black Back ) in Bölhorst, for a long time recalled mining in the area The Minden Coalfield (German: Mindener Revier) is located in the norther Wiehen foothills near the German town of Minden. Here,… …   Wikipedia

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• Salt dome — A salt dome is a type of structural dome formed when a thick bed of evaporite minerals (mainly salt, or halite) found at depth intrudes vertically into surrounding rock strata, forming a diapir.The salt that forms these domes was deposited within …   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

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