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Evan Thomas (died after 1881) was a Welsh ironmonger who became an inventor and manufacturer of safety lamps for miners. He was the original proprietor of the Cambrian Lamp Works, established in Aberdare in 1860.
A type of Davy lamp with apertures for gauging flame height. The lamp consists of a wick lamp with the flame enclosed inside a mesh screen. The screen acts as a flame arrestor; air (and any firedamp present) can pass through the mesh freely enough to support combustion, but the holes are too fine to allow a flame to propagate through them and ignite any firedamp outside the mesh.
A similar lamp was designed by George Stephenson. [6] Day level. A level driven from the surface. Deep. Workings and roadways at a level below the pit bottom. Deputy. A "deputy overman", deputy, fireman (North Wales and parts of Lancashire) or examiner (South Wales) was an underground official who had supervision of a district and the men ...
The Sussmann lamp [58] was introduced into Britain in 1893 and following trials at Murton Colliery in Durham it became a widely used electric lamp with 3000 or so reported by the company in use in 1900 [59] However, by 1910 there were only 2055 electric lamps of all types in use – about 0.25% of all safety lamps. [60]
A mining lamp is a lamp, developed for the rigid necessities of underground mining operations. Most often it is worn on a hard hat in the form of a headlamp. History
Liddell concluded that the most likely cause of the explosion was poor observance of shot-firing regulations, it having been normal practise to ignore the blue-flame warning of the lamps. Secondly, only the miners within a 50 yards (46 m) distance were removed from the immediate workings, and not the entire district as the regulations required. [1]
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