coal mining

(redirected from coal miner)
Also found in: Dictionary, Thesaurus, Wikipedia.

coal mining,

physical extraction of coal resources to yield coal; also, the business of exploring for, developing, mining, and transporting coal in any form. Strip mining is the process in which the overburden (earth and rock material overlying the coal) is removed to expose a coal seam or coal bed. Excavators either dispose of the overburden or store the waste material for replacement after the coal has been extracted. Once exposed, the coal is usually removed in a separate operation. Surface soil is often stripped separately and spread back onto the reclaimed surface. The environment can also be protected by seeding or planting grass or trees on the fertilized restored surface of a strip mine. The term strip mining is most often used in reference to coal mining, although the process may also be used to extract certain metallic ores as well. Sometimes the terms open-pit, open-cast, or surface mining are used in the same sense, although they usually refer to metalliferous mining or the mining of other minerals. Underground coal mining is the extraction of coal from below the surface of the earth. The coal is worked through tunnels, passages, and openings that are connected to the surface for the purpose of the removal of the coal. Mechanical equipment breaks the coal to a size suitable for haulage. Alternatively, the coal is drilled, and the resultant holes are loaded with explosives and blasted in order to break the coal to the desired size. In order to protect the miners and equipment in an underground coal mine, much attention is paid to maintaining and supporting a safe roof or overhead ceiling for the extraction openings. Long-wall mining is a method of underground mining believed to have been developed in Shropshire, England, near the end of the 17th cent. A long face, or working section, of coal, some 600 ft (180 m) in length, is operated at one time. The miners and machinery at the working face are usually protected by hydraulic jacks or mechanical props which are advanced as the coal is extracted. The excavated, or gob, area is either allowed to cave in, or is filled in by waste material called stowing. The Anderton shearer is a widely used coal cutter and loader for long-wall mining. It shears coal from the face as it moves in one direction and loads coal onto an armored conveyor as it travels back in the opposite direction. It is ordinarily used for coal seams greater than 3.5 ft (9.1 cm) in thickness.

coal mining

[′kōl ‚mīn·iŋ]
(mining engineering)
The technical and mechanical job of removing coal from the earth and preparing it for market.
References in periodicals archive ?
The coal miners representative organization National Labour Federation's (NLF) centeral leader Shamsur Rehman Swati on Friday elaborating the campaign said the federation will launch its movement
THE EPA'S ON STEROIDS" Lieser, the longtime coal miner, remembers another regulatory campaign in the 1980s, when concerns over acid rain eventually led to a meaty section of Clean Air Act of 1990.
FreedomWorks for America believes excessive regulations on energy production are harming the living standards for hard-working Americans, including coal miners and their families.
Every coal miner knows when he enters the mine that there's a large risk he'll never see daylight again," Alan Bates, a former coal miner in Letcher County, Kentucky, told JS.
This book is described as the first published memoir by an Appalachian coal miner Armstead followed his father into mines in West Virginia in 1947 and worked at various sites until his retirement as a safety inspector in 1987.
He was the 11thof 15 children of a coal miner and his wife, Lithuanian immigrants.
Thus, they argue, there is no inherent propensity to striking in the occupation of coal miner.
Residents monitor them in conversation - "You know," said Dennis Dickens of Peach Tree, a retired coal miner and avid ginsenger, "there was a red oak up this hollow here that fell down, I'd say about five years ago, was the largest red oak I ever saw.
Following a brief application of Marxist class struggle theory to coal miners in the United States, Curran demonstrates that Federal mine safety and health legislation had not been developed, promulgated, or enforced consistent with the needs of the workers.
Bhattacharya has joined CIL as the CMD of the coal miner from Singareni Collieries Co Ltd, where he was working in the same capacity since May 10, 2012.
Coun Crimmings said: "The staggering amount of years Mr Davies spent working as a coal miner is absolutely incredible and it is fitting we remember him today with the placing of the blue plaque on the house where he was born.
QUETTA -- Pakistani coal miner Tariq Khan, 17, typically starts his day at 5 a.