encyclopedia coal mining

Coal Mining - Earth Issues - Animal Encyclopedia

Coal mine methane, a greenhouse gas emitted by mining of the mineral, is 20 times more toxic than carbon dioxide. In China, even though 95 percent of the mines are underground, the threat of a methane outburst always looms. Other problems that

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Coal National Geographic Society

Coal mining also provides economic stability for millions of people worldwide. The coal industry relies on people with a wide range of knowledge, skills, and abilities. Jobs associated with coal include geologists, miners, engineers, chemists, geographers,

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coal mining Definition, History, Types, Facts Britannica

2021-11-14  coal mining, extraction of coal deposits from the surface of Earth and from underground.. Coal is the most abundant fossil fuel on Earth. Its predominant use has always been for producing heat energy. It was the basic energy source that fueled the

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Coal Mining - Encyclopedia of Arkansas

Coal Mining. Coal fields in Arkansas are located in the Arkansas River Valley between the western border of the state and Russellville (Pope County) an area only about thirty-three miles wide and sixty miles long. Until about 1880, most coal mined in Arkansas was used near its original location, often to

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Coal Encyclopedia

2021-10-25  The growth of surface mining and the closure of non-productive mines led to increases in coal mining productivity through the 1980s and 1990s. (See Figure 4.4.) Because surface mines are easier to work, they average up to three times the productivity of underground mines.

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coal mining summary Britannica

coal mining, Extraction of coal deposits from the Earth’s surface and from underground. Because coal was the basic energy source that fueled the Industrial Revolution, the resulting industrial growth supported the large-scale exploitation of coal deposits.In the late 20th century, open pit mines replaced underground mines as the principal source of coal in the industrial nations.

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mining - Encyclopedia Britannica

mining, process of extracting useful minerals from the surface of the Earth, including the seas.A mineral, with a few exceptions, is an inorganic substance occurring in nature that has a definite chemical composition and distinctive physical properties or molecular

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Mining National Geographic Society

Mining is the process of extracting useful materials from the earth. Some examples of substances that are mined include coal, gold, or iron ore.Iron ore is the material from which the metal iron is produced. The process of mining dates back to prehistoric times. Prehistoric people first mined flint, which was ideal for tools and weapons since it breaks into shards with sharp edges.

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Coal, Production of Encyclopedia

2021-10-26  COAL, PRODUCTION OFGEOLOGY OF COALCoal is a fossil fuel—an energy source whose beginnings can be traced to once-living organic materials. It is a combustible mineral, formed from the remains of trees, ferns, and other plants that existed and died in the tropical forests 400 million to 1 billion years ago. Source for information on Coal, Production of: Macmillan Encyclopedia of Energy

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Mine Encyclopedia

2018-5-18  mine Excavation from which minerals (mainly coal and metal ores) are extracted. Underground mines are of two main types: shaft mines and drift mines. Shafts are sunk vertically in the Earth's crust until they reach the depth of the seams to be exploited, which are then reached by tunnels or galleries. Drift mines are generally shallower, the seams being reached by a drift, or gradually

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Surface Mining Methods and Equipment

2020-8-25  UNESCO – EOLSS SAMPLE CHAPTERS CIVIL ENGINEERING – Vol. II - Surface Mining Methods and Equipment - J. Yamatomi and S. Okubo ©Encyclopedia of Life Support Systems (EOLSS) Figure 2. Change in production and productivity of US coal mines The higher productivity for open pit mining equipment also lowers costs.

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Coal Uses, Types, Pollution, Facts Britannica

Coal, one of the most important primary fossil fuels, a solid carbon-rich material, usually brown or black, that most often occurs in stratified sedimentary deposits, which may later be subjected to high temperatures and pressures during mountain building, resulting

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Coal mining - encyclopedia article - Citizendium

2021-3-13  Coal mining is a term that encompasses the various methods used to extract the carbon-containing rock called coal from the ground. Coal tends to exist in seams, which are lateral layers under the earth that may vary in depth from one or two feet to dozens of feet.

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Coal Mining - Earth Issues - Animal Encyclopedia

Coal mine methane, a greenhouse gas emitted by mining of the mineral, is 20 times more toxic than carbon dioxide. In China, even though 95 percent of the mines are underground, the threat of a methane outburst always looms. Other problems that

More

Coal Encyclopedia

2021-10-25  The growth of surface mining and the closure of non-productive mines led to increases in coal mining productivity through the 1980s and 1990s. (See Figure 4.4.) Because surface mines are easier to work, they average up to three times the productivity of underground mines.

More

coal mining Definition, History, Types, Facts Britannica

2021-11-14  coal mining, extraction of coal deposits from the surface of Earth and from underground.. Coal is the most abundant fossil fuel on Earth. Its predominant use has always been for producing heat energy. It was the basic energy source that fueled the

More

Coal Mining - Encyclopedia of Arkansas

Coal Mining. Coal fields in Arkansas are located in the Arkansas River Valley between the western border of the state and Russellville (Pope County) an area only about thirty-three miles wide and sixty miles long. Until about 1880, most coal mined in Arkansas was used near its original location, often to

More

coal mining summary Britannica

coal mining, Extraction of coal deposits from the Earth’s surface and from underground. Because coal was the basic energy source that fueled the Industrial Revolution, the resulting industrial growth supported the large-scale exploitation of coal deposits.In the late 20th century, open pit mines replaced underground mines as the principal source of coal in the industrial nations.

More

coal mining - Choosing a mining method Britannica

2021-11-15  coal mining - coal mining - Choosing a mining method: The various methods of mining a coal seam can be classified under two headings, surface mining and underground mining. Surface and underground coal mining are broad activities that

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Coal, Production of Encyclopedia

2021-10-26  COAL, PRODUCTION OFGEOLOGY OF COALCoal is a fossil fuel—an energy source whose beginnings can be traced to once-living organic materials. It is a combustible mineral, formed from the remains of trees, ferns, and other plants that existed and died in the tropical forests 400 million to 1 billion years ago. Source for information on Coal, Production of: Macmillan Encyclopedia of Energy

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Surface Mining Methods and Equipment

2020-8-25  UNESCO – EOLSS SAMPLE CHAPTERS CIVIL ENGINEERING – Vol. II - Surface Mining Methods and Equipment - J. Yamatomi and S. Okubo ©Encyclopedia of Life Support Systems (EOLSS) Figure 2. Change in production and productivity of US coal mines The higher productivity for open pit mining equipment also lowers costs.

More

Mine Encyclopedia

2018-5-18  mine Excavation from which minerals (mainly coal and metal ores) are extracted. Underground mines are of two main types: shaft mines and drift mines. Shafts are sunk vertically in the Earth's crust until they reach the depth of the seams to be exploited, which are then reached by tunnels or galleries. Drift mines are generally shallower, the seams being reached by a drift, or gradually

More

Coal-Mining Strikes The Encyclopedia of Oklahoma

Afterward, no significant strikes took place for four decades. In December 1977 three coal mines that produced about 40 percent of Oklahoma's soft coal were closed by the United Mine Workers. This included the Peabody Coal and Mine Company, located between

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Coal-Mining Disasters The Encyclopedia of Oklahoma ...

Bibliography. Stanley Clark, "Immigrants to the Choctaw Coal Industry," The Chronicles of Oklahoma 33 (Winter 1955–56). Philip A. Kalisch, "Ordeal of the Oklahoma Miners: Coal Mining Disasters in the Sooner State, 1886–1945," The Chronicles of Oklahoma 48 (Autumn 1970). Frederick L. Ryan, The Rehabilitation of Oklahoma Coal Mining Communities (Norman: University of Oklahoma Press, 1935).

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Coal mining - encyclopedia article - Citizendium

2021-3-13  Coal mining is a term that encompasses the various methods used to extract the carbon-containing rock called coal from the ground. Coal tends to exist in seams, which are lateral layers under the earth that may vary in depth from one or two feet to dozens of feet.

More

Coal Mining - Encyclopedia of Arkansas

Coal Mining. Coal fields in Arkansas are located in the Arkansas River Valley between the western border of the state and Russellville (Pope County) an area only about thirty-three miles wide and sixty miles long. Until about 1880, most coal mined in Arkansas was used near its original location, often to

More

Coal Mining - an overview ScienceDirect Topics

Coal mining operations generate a considerable amount of rocks (discarded mine stone), rejecting coal and fines that are produced during washing. These material excavation from the anoxic subsurface and transfer to the surface for the process. Residues from the mining contain various metals like Al, Cu, Fe, Mn, Pb, Zn, etc. (Silva et al., 2013 ).

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Coal Mine - an overview ScienceDirect Topics

Joule Bergerson, Lester Lave, in Encyclopedia of Energy, 2004. 4.6.3 Coal Mine Fires. Coal mines contain hazardous and explosive gases, and there is a potential for long-lasting fires. The OSM estimates that there are currently 4163 acres burning, including 94 sites where hazardous or explosive gas is being emitted from underground mine fires, which can have an effect on humans in the vicinity ...

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Coal-Mining Strikes The Encyclopedia of Oklahoma

Afterward, no significant strikes took place for four decades. In December 1977 three coal mines that produced about 40 percent of Oklahoma's soft coal were closed by the United Mine Workers. This included the Peabody Coal and Mine Company, located between

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Respirable Coal Mine Dust Exposure Encyclopedia

Respirable coal mine dust (RCMD) exposure is associated with black lung and silicosis diseases in underground miners. Although only RCMD mass and silica concentrations are regulated, it is possible that particle size, surface area, and other chemical constituents also contribute to its adverse health effects. This review summarizes measurement technologies for RCMD mass concentrations ...

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Coal in Canada The Canadian Encyclopedia

2006-2-6  Coal is a fossil fuel that has been used as a source of energy in Canada since the 18th century. Canada is home to 0.6 per cent of the world’s coal resources. Most of the country’s coal reserves (over 95 per cent) are found in Alberta, British Columbia

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Mining - bionity

Mining is the extraction of valuable minerals or other geological materials from the earth, usually (but not always) from an ore body, vein or (coal) seam. Materials recovered by mining include bauxite, coal, copper, gold, silver, diamonds, iron, precious metals, lead, limestone, nickel, phosphate, oil shale, rock salt, tin, uranium and molybdenum.Any material that cannot be grown from ...

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Mine Encyclopedia

2018-5-18  mine Excavation from which minerals (mainly coal and metal ores) are extracted. Underground mines are of two main types: shaft mines and drift mines. Shafts are sunk vertically in the Earth's crust until they reach the depth of the seams to be exploited, which are then reached by tunnels or galleries. Drift mines are generally shallower, the seams being reached by a drift, or gradually

More

Coal Demethanation The Canadian Encyclopedia

2006-2-6  Coal demethanation is a process by which methane gas is removed from coal deposits. The principal objective of coal demethanation, since its introduction in 1943, has been to remove the safety hazard the gas poses to miners. Methane is the principal

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Coal-Mining Disasters The Encyclopedia of Oklahoma ...

Bibliography. Stanley Clark, "Immigrants to the Choctaw Coal Industry," The Chronicles of Oklahoma 33 (Winter 1955–56). Philip A. Kalisch, "Ordeal of the Oklahoma Miners: Coal Mining Disasters in the Sooner State, 1886–1945," The Chronicles of Oklahoma 48 (Autumn 1970). Frederick L. Ryan, The Rehabilitation of Oklahoma Coal Mining Communities (Norman: University of Oklahoma Press, 1935).

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Coal The Encyclopedia of Oklahoma History and Culture

The Osage Coal and Mining Company developed mines at Krebs and McAlester. The company sold its product to the Katy and had a virtual monopoly on commercial coal mining in Indian Territory until 1881. The second major producer during the 1880s was

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