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Trimdon Grange is a village in County Durham, in England. It is situated ten miles to the west of Hartlepool, and a short distance to the north of Trimdon. ==Colliery Disaster== At 14:40 on 16 February 1882 the Trimdon Grange colliery suffered a major explosion causing the deaths of 69 men and boys. The coroner (TW Snagge) reported to both houses of Parliament: * The mine was a dusty mine and watering should have been daily but it was done "not in all places, but where it was absolutely necessary." * The mine was not "more than ordinarily gassy", but there is some evidence that the identified points of leakage might have been points of accumulation from leaks elsewhere. * The lamps in use were Davy pattern〔Miners in the north eastern pits have traditionally preferred the Geordie lamp which incorporates a glass inner tube through which the flame cannot be blown.〕 and naked lights called "midgies" in some areas. The coroner found no evidence that the midgies were connected with the explosion. * Good order and discipline prevailed in Trimdon Grange Colliery. * The air pressure had been exceptionally low, the lowest it had been that month, falling to on the morning of the explosion.〔Low air pressure will encourage gas to leak out of the seams〕 * The roof above the workings in the narrow pit district had been observed to be dangerous. The inquest concluded: The coroner further observed: Not all the men were killed by the explosion and fire. After the explosion the burnt methane (firedamp) forms carbon dioxide (then called carbonic acid gas) and carbon monoxide. The resulting mixture is called afterdamp and will suffocate and kill. Indeed, the gas forced its way through a passage into the adjoining Kelloe Pit where six men lost their lives from the afterdamp. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Trimdon Grange」の詳細全文を読む スポンサード リンク
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