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England's worst mining disaster occurred when a series of explosions (depicted) caused by flammable gases ripped through the Oaks Colliery, killing 361 people.
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Oaks explosion
1866 British mining disaster
The Oaks explosion, which happened at a coal mine in West Riding of Yorkshire on 12 December 1866, remains the worst mining disaster in England. A series of explosions caused by firedamp ripped through the underground workings at the Oaks Colliery at Hoyle Mill near Stairfoot in…Source: Wikipedia (CC BY-SA)
Firedamp
Flammable gas found in coal mines
Firedamp is any flammable gas found in coal mines, typically coalbed methane. It is particularly found in areas where the coal is bituminous. The gas accumulates in pockets in the coal and adjacent strata and, when they are penetrated, the release of the gas can cause…Source: Wikipedia (CC BY-SA)