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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A government report in April 1926 suggested half of the 38 victims were suffocated by the firedamp gas.
The disaster was blamed on the ignition of coal dust following an explosion of firedamp.
Another firedamp explosion occurred in a coal mine in northwestern province of Balikesir, where 17 people had died four years ago.
By 1960 the colliery employed 650 men producing 30,757 tonnes of coal with the constant danger of outbursts of coal and firedamp from the deep anthracite seams, one ouburst claimed the lives of six miners in 1971.
Both explosions are thought to have been caused by firedamp (methane) being ignited by a spark.
In the dim light of his safety lamp he thought he had found survivors sitting in a group but their lifelike ruddy complexions were caused by suffocation from the deadly firedamp.
This particular method of photography was necessary for one vital reason: Firedamp.
But while the healing process may begin anew in the weeks and months to come, today will be filled with memories of firedamp and coal dust, and a powerful explosion that silently rocked the foundations of Six Bells.
The picks of the cutter struck pyrites, which caused sparks which ignited firedamp ( a mixture of methane gas and air.