firedamp


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fire·damp

(fīr'damp),
Methane or other light hydrocarbons forming an explosive mixture when mixed with 7 or 8 volumes of air.

firedamp

A colourless and odorless flammable gas, primarily composed of methane (60%), nitrogen and carbon dioxide, which is found in coal mines, putting miners at risk for death by asphyxia or explosion.
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References in periodicals archive ?
The connector is designed with armoured cables, which are certified for use in ha-zardous firedamp areas.
It was believed that an explosion of firedamp had sped through the underground development, caused by an opened safety lamp igniting the gas.
He researched the principles behind gas explosions and came up with a design for a lamp based on the observation that a fine-gauge wire mesh could prevent a flame "leaking" from a lamp and igniting any firedamp outside.
Stephenson had been experimenting for several years with candles close to firedamp emissions in the Killingworth mine.
Alf Manifesto, the fifty souls lost to the firedamp blast of 1960, Gabriel Parry, his old man.
Perhaps heads lifted from the worlk of scrubbing steps, hands still from wringing rainbows onto slate while below the town, deep in the pit a rock fall struck spark from a steel, and fired the void, punched through the mine a fist of blazing firedamp.
However, Dincer said the cause of the blast could be firedamp.
The disaster, which was probably caused by firedamp being ignited, killed 439 miners and one rescue worker.
Three coal seams were worked at Gresford: The Dennis shaft produced softer industrial coal but was prone to firedamp.
The accident was caused by ignition of firedamp (methane) which then triggered a coal dust explosion.