| 11. | Firedamp is all the more hazardous because of the after effects of the explosion.
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| 12. | Methane is the main gas present in firedamp.
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| 13. | Coal mining was very dangerous owing to the presence of firedamp in many coal seams.
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| 14. | Firedamp was ignited when being tested for with a Clanny lamp having a cracked glass.
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| 15. | It is thought the explosion was caused by firedamp igniting on contact with a candle.
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| 16. | A disaster in May 1924 when firedamp ignited killed five miners and injured 26 men.
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| 17. | The cause was an explosion of firedamp ignited by sparks from a damaged trailing cable.
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| 18. | Back in London Davy worked with Michael Faraday and identified " firedamp " as methane.
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| 19. | The cause was assumed to have been the ignition of firedamp by a safety lamp.
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| 20. | In addition, the shaft provided vitally important fresh air ventilation and extraction of the firedamp.
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