Inside the mine, rails were twisted, roof supports were destroyed, afterdamp and coal dust filled the air, and the lamps of the surviving miners were blown out.
22.
The biggest danger was that the safety lamps showed combustible gas within a short distance; these gasses were firedamp and afterdamp mixed with the black smoke emerging from the shafts.
23.
He kept his head down to allow the explosion to pass over him, but as soon as the explosion had occurred stood upright as much as possible to avoid the afterdamp.
24.
Gases known as " afterdamp " carbon dioxide and carbon monoxide produced by the explosion often prove to be just as deadly and can kill miners unhurt by the explosion itself.
25.
But as the six-man lead group went ahead attempting to fan the air to mitigate the effects of the deadly afterdamp, they soon realised the other miners had not followed them.
26.
The few living men had managed to make their way to the shaft bottom where there was at least some air, those more distant succumbed to the effects of afterdamp, principally carbon monoxide.
27.
The historian John H Brown, in his examination of the disaster, states that had the airflow been reversed, firedamp or afterdamp could have been extracted from some sectors into the blaze, causing another explosion.
28.
The last body was recovered on 16 July 1857, it was later found out that most men died in the explosion, but that a large amount of the victims were also killed by suffocation by Afterdamp.
29.
He also learned the language of mining : " firedamp, " _ the highly inflammable methane gas that snakes through coal veins; and " afterdamp, " the asphyxiating gas that follows a methane explosion.
30.
However, three members of Llay No . 1 rescue team, the first group to enter the mine after the explosion, were asphyxiated by afterdamp after attempting to proceed up the mile-long return airway of the 20's district.
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