coal dust


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coal dust

[′kōl ‚dəst]
(mining engineering)
A finely divided coal, sometimes defined as coal that will pass through 100-mesh screens (100 wires to the inch or 40 wires to the centimeter).
References in periodicals archive ?
Just like conventional rock dust, hydrophobic rock dust will need to be re-applied on regular intervals to avoid a build-up layer of coal dust on top of the rock dust surface.
First of all, the purchaser of the coal wants coal - not coal dust.
The explosion unleashed more than 2,500 tons of coal dust, an engineer for one of the mine's parent companies, Du Bo, told the state-run Xinhua News Agency.
He explained: "The coal dust lodges in the bronchial tubes which causes a build-up of excess mucus in the lungs.
It is from these statistics that some of the best ideas in coal dust suppression have been born.
Coal export opponents in Eugene say unhealthy coal dust would blow from the trains, and that the burning of carbon-based coal in Asia for electricity would contribute to climate change and air pollution.
The death toll from explosions would run into many hundreds until it was realised that coal dust was responsible for increasing the severity of explosions underground.
I was not a deprived child, I lived in a semi-detached and had a middle-class lifestyle and remember folding paper to help light the fires, and even using coal dust and damp paper to keep fires smouldering when out.
They suffer respiratory diseases from coal dust, noise from ceaseless underground explosions and the fumes of 100 diesel trucks transporting 170 tons of coal a day on a 24-hour schedule.
The outpatient program treats patients with chronic obstructive pulmonary diseases such as emphysema, chronic bronchitis and asthma as well as diseases resulting from prolonged occupational exposure to asbestos, coal dust, silica and industrial pollutants, all of which leave afflicted persons with shortness of breath, weakness and fear of suffocation.
sweeping or vacuuming the fallen or accumulated coal and coal dust or wet sediment levels for individual technological objects Uul.
In addition to posting a report to its own website, BNSF also testified at hearings before the Surface Transportation Board that each rail car loses an average of 500 lb of coal dust per trip.