Metal Mine Ventilation

VENTILATION of underground workings consists in establishment of such control of air currents that the underground workers may work in safety, with maximum comfort and efficiency, and without impairment of health; and requires that the mine openings may be made subject to such control of air flow as to remove from these workings at ordinary times harmful gases and dusts, and that, at time of emergency, such as fire or explosion, there may be maintained as much or as little air flow as may be desired covering portions of the mine or the mine in its entirety.
Keywords: Air, carbon dioxide, carbon monoxide, coal mines, relative humidity, U.S. Bureau of Mines, Dust, metals, Mine, Mines, Temperature, Underground, Ventilation
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