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coal mine meaning: 1. the deep hole or system of holes under the ground from which coal is removed 2. a deep hole or.. Learn more.
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Coal mining definition: the act, process, or industry of extracting coal from the earth | Meaning, pronunciation, translations and examples
Glossary of Mining Terminology After Damp Gasses resulting from underground combustion, normally carbon monoxide. This is a loose term implying any fatal gas in a mine after an explosion or fire. Air Shaft A vertical opening into a mine for the passage of air. Airway Any passage in a mine along which an air current moves. Some passages are
Coal mining is further divided into Bituminous coal underground mining, Bituminous coal and lignite surface mining, and Anthracite mining. Bituminous coal underground mining employs slightly more than half of all coal mining industry workers, but experiences a higher share of occupational injuries, illnesses, and fatalities. The rate of fatal ...
definition opcc coal mining. ... 1 PART II DEFINITIONS C. COAL MINE The definition of a coal mine ... The definition of a coal mine is important in that an individual is considered a miner only to the extent that work is performed in or around a coal mine or coal. Read More.
Mining is the extraction of valuable minerals or other geological materials from the Earth, usually from an ore body, lode, vein, seam, reef or placer deposits form a mineralized package that is of economic interest to the miner. Ores recovered by mining include metals, coal, oil shale, gemstones, limestone, chalk, dimension stone, rock salt, potash, gravel, and clay.
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Coal mining is the process of extracting coal from the ground. Coal is valued for its energy content and since the 1880s, has been widely used to generate electricity. Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production. In the United Kingdom and South Africa, a coal mine and its structures are a colliery, a coal mine .
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Abutment — In coal mining, (1) the weight of the rocks above a narrow roadway is transferred to the solid coal along the sides, which act as abutments of the arch of strata spanning the roadway; and (2) the weight of the rocks over a longwall face is transferred to the front abutment, that is, the solid coal ahead of the face and the back abutment, that is, the settled packs behind the face.
Define mining. mining synonyms, mining pronunciation, mining translation, English dictionary definition of mining. n. 1. The process or business of extracting ore or minerals from the ground. ... Mining lease has been granted for 31 Schedule II coal mines and mining operations have commenced/mine opening permission granted to 12 Schedule II ...
Glossary of Mining Terms ... In coal mining this is the intended basis for roof bolting. Bearing – A surveying term used to designate direction. The bearing of a line is the acute horizontal angle between the meridian and the line. The meridian is an established line of reference. Azimuths are angles measured clockwise from any meridian.
This is a partial glossary of coal mining terminology commonly used in the coalfields of the United Kingdom. Some words were in use throughout the coalfields, some are historic and some are local to the different British coalfields. A. Adit. An adit is an underground level or tunnel to the surface for access or drainage purposes. ...
Define coal mine. coal mine synonyms, coal mine pronunciation, coal mine translation, English dictionary definition of coal mine. Noun 1. coal mine a mine where coal is dug from the ground coalpit colliery, pit a workplace consisting of a coal mine plus all the buildings and...
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