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Recommendation of the bureau of mines on certain questions of mine safety
Miners' lamps, explosives definitions of degree of gassiness, auxiliary fans or blowers, rock dusting\ill\ sealing of sections not well ventilated, separate mine workings for intake and return air\ill\ definitions as to ventilation regulation: quantity and quality of air for ventilation, chiefly applying to coal mines: ways of escaping from mines. (see also Coal Min., vol. 6, no. 2, Feb. 1929, pp. 67-68, 75-76 and 78-79)
Recommendation of the bureau of mines on certain questions of mine safety
Miners' lamps, explosives definitions of degree of gassiness, auxiliary fans or blowers, rock dusting\ill\ sealing of sections not well ventilated, separate mine workings for intake and return air\ill\ definitions as to ventilation regulation: quantity and quality of air for ventilation, chiefly applying to coal mines: ways of escaping from mines. (see also Coal Min., vol. 6, no. 2, Feb. 1929, pp. 67-68, 75-76 and 78-79)
Recommendation of the bureau of mines on certain questions of mine safety
U. S. Bur. Mines -- Information Cir
1928
12 pages
Report
English
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