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The two most recent variants of the cap lamp are the GEN 4 and GEN 5 models. The GEN 4 model, approved for use by the Mine Safety and Health Administration (MHSA), uses the headpiece of existing cap lamps, but retrofitted with new LEDs and electronics. The GEN 5 model is very similar to the GEN 4 model except with a more intense spot beam that ...
A mining lamp is a lamp, developed for the rigid necessities of underground mining operations. ... 1909 Cap (helmet) lamps introduced in Scotland
Rimmer, D & others Clanny, Stephenson and Davy: commemorating the bicentenary of the miners safety lamps. Miners Lamp Collectors Society, 2015; Watson, W.F. The invention of the miners safety lamp: a reappraisal Transactions, Newcomen Society 70(1) 1998-9, 135-141 "to settle the disputed features of the lamps of Clanny, Davy and Stephenson"
Thomas Edison developed electric cap lamps for miners in 1914; by 1915, certain cap lamps were approved by the United States Bureau of Mines for safe use where there may be inflammable gas as in coal mines. [citation needed] These included features such as spring-loaded contacts to automatically disconnect broken bulbs. [3]
A carbide lamp or acetylene gas lamp is a simple lamp that produces and burns acetylene (C 2 H 2), which is created by the reaction of calcium carbide (CaC 2) with water (H 2 O). [ 1 ] Acetylene gas lamps were used to illuminate buildings, as lighthouse beacons, and as headlights on motor-cars and bicycles.
A lampman had responsibility for maintaining lamps and for issuing them from the lamp room at the start of a shift. Level. A level is a roadway along the strike of the strata, i.e. at right angles to the dip. [17] Longwall face. A longwall face is a coal face of considerable length between the gates from which the coal is removed. [1]
A regional jet departed Kansas and headed to one of the country’s most congested and complicated flight approaches, just south of the brightly illuminated marble monuments of Washington, DC. The ...
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.
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