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Pulverized coal is a significant dust explosion hazard, as large quantities are suspended in air for transfer from the mill to the power plant. Explosions have occurred [ where? ] [ example needed ] when the flow drops and flames in the burning chamber pass back along the ductwork delivering fuel.
Dust explosions are a frequent hazard in coal mines, grain elevators and silos, and other industrial environments. They are also commonly used by special effects artists, filmmakers , and pyrotechnicians , given their spectacular appearance and ability to be safely contained under certain carefully controlled conditions.
Firedamp explosions can trigger the much more dangerous coal dust explosions, which can engulf an entire pit. Most of these risks can be greatly reduced in modern mines, and multiple fatality incidents are now rare in some parts of the developed world.
Instead, regulations centered on coal dust, a separate hazard created by crushing or pulverizing coal rock that also contributes to black lung. In the decades since, silica dust has become a major ...
The Brunner Mine disaster happened at 9:30 am on Thursday 26 March 1896 (NZMT; UTC+11:30), when an explosion deep in the Brunner Mine, in the West Coast region of New Zealand, killed all 65 miners below ground. The Brunner Mine disaster is the deadliest mining disaster in New Zealand's history. [1]
Mining accidents can occur from a variety of causes, including leaks of poisonous gases such as hydrogen sulfide [2] or explosive natural gases, especially firedamp or methane, [3] dust explosions, collapsing of mine stopes, mining-induced seismicity, flooding, or general mechanical errors from improperly used or malfunctioning mining equipment (such as safety lamps or electrical equipment).
The presence of coal dust in the air increased the risk of explosion with firedamp and could cause explosions even in the absence of firedamp. The Tyneside coal mines in England had the deadly combination of bituminous coal contaminated with pyrites and there was a great number of deaths in accidents caused by firedamp explosions, including 102 ...
Two years earlier, a mine explosion in Monongah, West Virginia, killed 362 people, including several children. In 1913, 263 people died in another explosion at a mine in Dawson, New Mexico.