roof subsidence
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Subsidence — For subsidence in the atmosphere, see subsidence (atmosphere). A road destroyed by subsidence and shear, near Castleton, Derbyshire … Wikipedia
Subsidence crater — A subsidence crater is a hole or depression left on the surface of an area which has had an underground (usually nuclear) explosion. Many such craters are present at the Nevada Test Site, which is no longer in use for nuclear testing.Subsidence… … Wikipedia
cauldron subsidence — noun : the sinking of part of the roof of a magma chamber usually involving downward movement along circumferential faults * * * cauldron subsidence noun (geology) The subsidence of a cylindrical mass of the Earth s crust, bounded by a circular… … Useful english dictionary
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 mining — Men leaving a UK colliery at the close of a shift Surface coal mining in Wyo … Wikipedia
mass movement — an organized effort by a large number of people, esp. those not forming part of the elite of a given society, to bring about pervasive changes in existing social, economic, or political institutions, frequently characterized by charismatic… … Universalium
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
Longwall mining — is a form of underground coal mining where a long wall (typically about 250 400 m long) of coal is mined in a single slice (typically 1 2 m thick). The longwall panel (the block of coal that is being mined) is typically 3 4 km long and 250 400 m… … Wikipedia
Barlaston Hall — is an English Palladian country house in the village of Barlaston in Staffordshire, overlooking the valley of the River Trent 5 miles south of Stoke on Trent. It was built by architect Sir Robert Taylor for Thomas Mills in 1756 8, to replace the… … Wikipedia
Regulatory taking — refers to a situation in which a government regulates a property to such a degree that the regulation effectively amounts to an exercise of the government s eminent domain power without actually divesting the property s owner of title to the… … 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
