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Coal dust is a fugitive combustible dust - a dust that is both a pollutant and combustible when dispersed into the air. [2] Due to the small particle size and combustible nature of this dust, there is a risk of an explosion and inhalation.
Breathing in coal dust causes coalworker's pneumoconiosis or "black lung", so called because the coal dust literally turns the lungs black. [137] In the US alone, it is estimated that 1,500 former employees of the coal industry die every year from the effects of breathing in coal mine dust. [138]
Coal refuse, also known as coal waste, rock, slag, coal tailings, waste material, rock bank, culm, boney, or gob, is the material left over from coal mining, usually as tailings piles or spoil tips. For every tonne of hard coal generated by mining, 400 kg (880 lb) of waste material remains, which includes some lost coal that is partially ...
The coal dust, being finely divided, in turn explodes and the resulting explosion propagates along the tunnel as a flame front. At Easington the explosion travelled down the south headings to the west roads and then along the west roads, down the straight north headings and into the main coal where it reached as far as the training area. [ 20 ]
A coalfield is an area of certain uniform characteristics where coal is mined. The criteria for determining the approximate boundary of a coalfield are geographical and cultural, in addition to geological. A coalfield often groups the seams of coal, railroad companies, cultural groups, and watersheds and other geographical considerations.
To transform the coal ash into a slurry, coal is separated from non-combustible components and can be fractionated by particle size as well.Coal slurry can be transferred by pipeline or with specialized pumps such as a progressive cavity pump to pump the highly abrasive, corrosive and viscous coal slurry. [2]
Coal miners will be better protected from poisonous silica dust that has contributed to the premature deaths of thousands of mine workers from a respiratory ailment commonly known as black lung ...
Coal dust is responsible for the respiratory disease known as pneumoconiosis, including coal worker's pneumoconiosis disease that occurs among coal miners. The danger of coal dust resulted in environmental law regulating workplace air quality in some jurisdictions. In addition, if enough coal dust is dispersed within the air in a given area, in ...