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Safety Lamps
A safety lamp is any of several types of lamp that provides illumination in coal mines and is designed to operate in air that may contain coal dust or gases, both of which are potentially flammable or explosive. Until the development of effective electric lamps in the early 1900s, miners used flame lamps to provide illumination. Open flame lamps could ignite flammable gases which collected in mines, causing explosions; safety lamps were developed to enclose the flame and prevent it from igniting the surrounding atmosphere. Flame safety lamps have been replaced in mining with sealed explosion-proof electric lights. Background Damps or gases Miners have traditionally referred to the various gases encountered during mining as damps, from the Middle Low German word ''dampf'' (meaning " vapour"). Damps are variable mixtures and are historic terms. * ''Firedamp'' Naturally occurring flammable mixtures, principally methane. * '' Blackdamp'' or ''Chokedamp'' Nitrogen and carbon dio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mine Safety Lamp
Mine, mines, miners or mining may refer to: Extraction or digging *Miner, a person engaged in mining or digging *Mining, extraction of mineral resources from the ground through a mine Grammar *Mine, a first-person English possessive pronoun Military * Anti-tank mine, a land mine made for use against armored vehicles * Antipersonnel mine, a land mine targeting people walking around, either with explosives or poison gas * Bangalore mine, colloquial name for the Bangalore torpedo, a man-portable explosive device for clearing a path through wire obstacles and land mines * Cluster bomb, an aerial bomb which releases many small submunitions, which often act as mines * Land mine, explosive mines placed under or on the ground * Mining (military), digging under a fortified military position to penetrate its defenses * Naval mine, or sea mine, a mine at sea, either floating or on the sea bed, often dropped via parachute from aircraft, or otherwise lain by surface ships or submarines * Pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trimdon Grange
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 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, fa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
