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explosion control in coal mining

CDC - Mining Feature - Coal Mine Explosion Prevention - NIOSH

Dec 09, 2011  Mining Feature: Coal Mine Explosion Prevention. There are two main types of coalmine explosions: methane and coal dust. Methane explosions occur when a buildup of methane gas contacts a heat source and there is not enough air to dilute the gas level below its explosion point. Likewise, fine particles of coal dust in the right concentration that ...

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Methods for Controlling Explosion Risk at Coal Mine ...

At coal mine working faces, simultaneous application of three basic elements reduces the methane explosion hazard: (1) adequate ventilation, (2) regular monitoring of gas concentrations, and (3) the elimination of ignition sources. This paper reviews the application of these elements in a manner relevant to Chinese coal mines.

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CDC - Mining Feature - Coal Mine Explosion Prevention ...

Sep 14, 2012  Mining Feature: Coal Mine Explosion Prevention Accomplishments. Mine explosions have a harmful impact not only on the mine, its workers, and the communities where they occur but on the industry overall. Explosions do not occur often, but when they do, lives, equipment, and product can be lost. Thanks to extensive federally funded research, a ...

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CDC - Mining Topic - Explosion Prevention - NIOSH

Aug 31, 2020  The NIOSH Mining Program conducts research to identify and then mitigate the causes of underground coal mine explosions. Research strategies include eliminating ignition sources, minimizing methane concentrations and coal dust accumulations, applying proper dispersible rock dust in sufficient quantity at all locations, using supplemental protection such as passive and active barriers to ...

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THE USE OF STONE DUST TO CONTROL COAL DUST

specific request, a review of passive and triggered explosion barriers in underground coal mines was commissioned (Zhou and Panawalage, 2001). Although explosion barriers used in conjunction with stone-dusting1 are thought by many to be an essential tool in the control of explosions in underground coal mines, their use is by no means ubiquitous.

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The prevention and control of fire and explosion in mines

• The Coal Mines (Precautions Against Inflammable Dust) Regulations 1956 set out requirements for the maintenance of incombustible matter in mine roadway dust including sampling, sample analysis, type of analysis and keeping records of analyses.

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Coal dust explosions and their prevention

Explosibility of coal dust has been studied in laboratories, in explosion galleries and in an experimental coal mine. The data and results obtained from the tests showed that finely pulverized coal dust has a lower explosive limit of 0.035 to 0.08 ounces per cubic foot.

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Mine Explosions - an overview ScienceDirect Topics

Mar 17, 2018  Chronological Developments of Coalbed Gas. Coal mining and the concern about mine safety in relation to coal mine explosions and derivative incidents originally spurred on coalbed gas development. For the past 100 years, efforts on improving technology and safety of coal mines worldwide focused on controlling methane from causing mine explosions.

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Effects of rock dusting in preventing and reducing ...

Jun 01, 2017    As an explosion control measure, rock dusting has been used in underground coal mines in many major coal producing countries with different standards. The effectiveness of the rock dust in reducing explosion intensity has been proven by historic events and laboratory experiments. The main functions of rock dust in controlling mine explosions (i.e., isolator, physical heat sink and chemical ...

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Why Do Coal Mines Explode? Live Science

Apr 06, 2010  The worst of these disasters was an explosion that killed 362 people in a coal mine in Monongah, W.Va in 1907. An explosion similar to this week's occurred at Sago Mine

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The prevention and control of fire and explosion in mines

• The Coal Mines (Precautions Against Inflammable Dust) Regulations 1956 set out requirements for the maintenance of incombustible matter in mine roadway dust including sampling, sample analysis, type of analysis and keeping records of analyses.

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Guideline for coal dust explosion prevention and suppression

Clauses of the Coal Mines Regulations relating to M 3006 MRTS Guideline for Coal Dust Explosion Prevention and Suppression are indicated in the References section of the uideline. The epartment of Mineral Resources document M 3006 MRTS TR Technical Reference Material for Coal Dust Explosion Prevention and Suppression provides technical reference material for the uideline.

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explosion control in coal mining

This iron and coal mine started under dual Chinese and Japanese control in 1905 but the mine was in territory invaded by the Japanese and became a mine using Japanese forced labor. On April 26 1942 a coal-dust explosion — a common hazard in underground mines — killed a full third of the workers on duty at the time: 1549 died.

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Fire or Explosion in Underground Mines and Tunnels ...

In 2012 the report of the Royal Commission on the Pike River Coal Mine Tragedy recommended ... 3.2.4 Principal Hazard Management Plans and Principal Control Plans 19 ... 10 / FIRE OR EXPLOSION IN UNDERGROUND MINES AND TUNNELS ACOP > Fire or explosion.

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Effects of rock dusting in preventing and reducing ...

Jun 01, 2017  As an explosion control measure, rock dusting has been used in underground coal mines in many major coal producing countries with different standards. The effectiveness of the rock dust in reducing explosion intensity has been proven by historic events and laboratory experiments. The main functions of rock dust in controlling mine explosions (i.e., isolator, physical heat sink and

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Mine Disasters, 1839-2019 NIOSH CDC

Accident type . Explosion - includes explosives, blast, powder fumes; Fire - includes smoke; Water - includes flood, dam failure, inundation ; Ground fall - includes cave-in, roof fall/bump, fall of rock/face/rib, collapse, slide of bank, snowslide ; Machinery/Equipment fall - includes cage fall, fall of skip, mine car fall, hoisting accident, crosshead fall, breaking drawbar

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Why Do Coal Mines Explode? Live Science

Apr 06, 2010  The worst of these disasters was an explosion that killed 362 people in a coal mine in Monongah, W.Va in 1907. An explosion similar to this week's occurred at Sago Mine

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Method for prevention and control of spontaneous ...

Sep 01, 2017  If these processes mentioned above cannot extinguish the fires or it is too expensive to extinguish the fire, pressure adjustment with positive pressure in coal mining area should be implemented under safe conditions. The whole processes and technical route of coal seam fires’ prevention and control in coal mining area are shown in Fig. 9.

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WV Mine Disasters 1884 to Present WV Office of Miners ...

Jan 29, 2021  EXPLOSION. 29. Note: From 1884 to 1961, accidents fatally injuring five or more employees were classed as disasters. From 1961 to date, accidents fatally injuring three or more employees are classed as disasters. *December 14, 1906 – This explosion killed 4 employees and 2 individuals on the surface near the mine. Last revised: 03/28/16 02:05 PM.

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Bishop, VA Explosion In Coal Mine, Oct 1958 GenDisasters ...

The mine entry is in Virginia although most of the underground diggins are on the West Virginia side. Virginia state mining officials said the mine is considered a West Virginia operation. The 1957 Bishop explosion came at 1:55 a.m. Monday, Feb. 4. Rescuers found the first bodies a

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12 Review of Mine Disaster Prevention and Control Research ...

The committee realizes that mine disaster prevention is a complex area requiring expertise in several fields such as (1) mining engineering; (2) fires and fire control engineering; (3) methane, coal, pyrite, and other explosives—their initiation, progression, and control; and (4) the impact of all of these on normal mine operations, disaster ...

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Active explosion barrier performance against methane and ...

Dec 09, 2015  Preventing the propagation of methane or coal dust explosions through the use of active explosion-suppression systems remains one of the most underutilised explosion controls in underground coal mines. As part of the effort to develop better technologies to safeguard mines, the use of active barrier systems was investigated at Kloppersbos in South Africa. The system is designed to

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Mine Disaster of 1951 - General 4 — City of West Frankfort

It also helped control the floating coal dust by dusting the mine walls with a limestone compound. The Safety Act has been so effective that there has been only one other mine disaster in southern Illinois since it was passed. The New Orient coal mine disaster of 1951 helped change mining history.

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Benxihu Colliery - Wikipedia

Coal dust explosion On April 26, 1942, a gas and coal- dust explosion in the mine sent flames bursting from the mine shaft entrance. Miners' relatives rushed to the site but were denied entry by a cordon of Japanese guards, who erected electric fences to keep them out. [1]

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Guideline for coal dust explosion prevention and suppression

Clauses of the Coal Mines Regulations relating to M 3006 MRTS Guideline for Coal Dust Explosion Prevention and Suppression are indicated in the References section of the uideline. The epartment of Mineral Resources document M 3006 MRTS TR Technical Reference Material for Coal Dust Explosion Prevention and Suppression provides technical reference material for the uideline.

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Method for prevention and control of spontaneous ...

Sep 01, 2017  If these processes mentioned above cannot extinguish the fires or it is too expensive to extinguish the fire, pressure adjustment with positive pressure in coal mining area should be implemented under safe conditions. The whole processes and technical route of coal seam fires’ prevention and control in coal mining area are shown in Fig. 9.

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Why Do Coal Mines Explode? Live Science

Apr 06, 2010  The worst of these disasters was an explosion that killed 362 people in a coal mine in Monongah, W.Va in 1907. An explosion similar to this week's occurred at Sago Mine

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Jokerville Mine Explosion Articles Colorado Encyclopedia

Jan 21, 2021  On January 24, 1884, the Jokerville Mine outside of Crested Butte was full of methane gas and exploded, killing fifty-nine workers. As the third-deadliest mine disaster in Colorado history, the Jokerville explosion demonstrated the dangers of coal mining, even as coal was an essential industry for the state at the time.

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Anglo American Grosvenor Mine Explosion Mine Safety News

Jun 15, 2020  What caused the mine explosion at the Anglo American Grosvenor mine? It’s still too early to say. There are several potential sources of ignitions in underground coal mines including frictional ignition from several sources, other sources of ignitions could include electrical equipment although most equipment used in underground coal mines is well protected.

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Sonman Mine Explosion

An explosion occurred in the Sonman "E" mine of the Sonman Shaft Coal Company, Sonman, Cambria County, Pennsylvania, at about 10:40 a.m. on July 15, 1940. Sixty-three men were killed as a result of this explosion, of which number about fifty-five were killed

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Worst coal-mine disaster in Washington history kills 45 ...

Dec 04, 2006  Coal itself contains methane and in a dusty mine an explosion immediately distills more gas from the coal dust, fueling the fire. Later coal mines were sprinkled with water to control dust, and later still they were rock-dusted (usually with powdered limestone), to dilute the highly combustible coal

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Bishop, VA Explosion In Coal Mine, Oct 1958 GenDisasters ...

The mine entry is in Virginia although most of the underground diggins are on the West Virginia side. Virginia state mining officials said the mine is considered a West Virginia operation. The 1957 Bishop explosion came at 1:55 a.m. Monday, Feb. 4. Rescuers found the first bodies a

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Aberfan disaster - Wikipedia

The Aberfan disaster was the catastrophic collapse of a colliery spoil tip on 21 October 1966. The tip had been created on a mountain slope above the Welsh village of Aberfan, near Merthyr Tydfil, and overlaid a natural spring.A period of heavy rain led to a build-up of water within the tip which caused it to suddenly slide downhill as a slurry, killing 116 children and 28 adults as it ...

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How the 1966 Aberfan Mine Disaster Became Elizabeth II's ...

Jan 04, 2019  The foundation of the disaster was laid nearly a century before, when the Merthyr Vale Colliery, a coal mine, was opened in the area. Wales had become famous for coal mining

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Upper Big Branch Mine disaster - Wikipedia

Explosion. The explosion occurred at 3:27 pm local time (19:27 UTC) on Monday, April 5, 2010, at the Upper Big Branch South Mine near the community of Montcoal, about 30 miles (48 km) south of Charleston.The mine was operated by the Performance Coal Company, a subsidiary of Massey Energy. The explosion ignited from an unknown source with high methane levels being a contributing causal

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The methane-air explosion hazard within coal mine gobs

ventilation schemes and further research are necessary to control this explosion hazard and make mining operations safe. Keywords: Longwall, gob, methane, EGZ, explosive gas zones, underground, coal, explosion, fire Jùrgen Brune, member SME, is professor, Colorado School of Mines, email [email protected] edu.

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Benxihu Colliery Explosion: Worst Mining Disaster in ...

Jan 09, 2015  The mine was surrounded by a guarded perimeter. Safety protocols were not much better than working conditions. On April 26, 1942, a fire broke out in the mines. It started off with a coal dust explosion, sending flames up the surface. A coal dust explosion – or any other dust made out of flammable material – is a deadly phenomenon by itself.

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America's Worst Mining Disasters - WorldAtlas

Jul 17, 2020  The mine employed about 300 men and was focused on cutting coal with machinery and hand-pick mining. Explosives were occasionally used. At about 3 p.m. blasts of smoke and debris burst out of the mine openings, blowing out the explosion doors and one side of the fan house, which is a building used for ventilation.

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