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Even pouring or spraying acetone over red-glowing coal will not ignite it, due to the high vapour concentration and the cooling effect of evaporation. [79] Acetone should be stored away from strong oxidizers, such as concentrated nitric and sulfuric acid mixtures. [81] It may also explode when mixed with chloroform in the presence of a base.
GAG units have been used in Australia, most notably in 2000 at the Blair Athol Mine, Queensland, where one extinguished a 54-year-old coal fire. [7] In 2003, a team from the Queensland Mine Rescue Service took a unit to West Virginia, where they successfully extinguished a 660-foot (200 m) deep, two-month-old fire at Loveridge Mine, after ten days of continuous use.
For use in thermal power plants, coal is ground into dust using a device called a powdered coal mill. [1] The resulting product, called powdered coal or pulverized coal, is then generally used in a fossil fuel power plant for electricity generation. Pulverized coal is a significant dust explosion hazard, as large quantities are suspended in air ...
A wide variety of appliances and uses for gas developed over the years. Gas fires, gas cookers, refrigerators, washing machines, hand irons, pokers for lighting coal fires, gas-heated baths, remotely controlled clusters of gas lights, gas engines of various types and, in later years, gas warm air and hot water central heating and air ...
On the morning of Aug. 4, 1917, a methane gas explosion at the Western Kentucky Coal Company’s No. 7 mine in Webster County killed 62 of the 153 men underground at the time. The other 91 men in ...
Damp is the collective name given to all gases (other than air) found in coal mines in Great Britain and North America. [1]As well as firedamp, other damps include blackdamp (nonbreathable mixture of carbon dioxide, water vapour and other gases); whitedamp (carbon monoxide and other gases produced by combustion); poisonous, explosive stinkdamp (hydrogen sulfide), with its characteristic rotten ...
This can result in a steep coal seam gas pressure gradient into the seam, (as opposed to a low stress environment where the coal seam gas drains freely into the face area, resulting in a low seam gas pressure gradient). As mining progresses, this pressure can be violently released, resulting in an outburst. The statistical results show that the ...
The term is etymologically and practically related to other terms for underground mine gases—such as firedamp, white damp, and black damp, with afterdamp being composed, rather, primarily by carbon dioxide, carbon monoxide and nitrogen, with highly toxic stinkdamp-constituent hydrogen sulfide possibly also present.