black-damp

Definitions

noun Carbon dioxid gas, which is found in greater or less quantity in all collieries, being given off by many coals, either mixed with fire-damp, or separately, or produced in various other ways, as by the exhalations of the men, by fires, and by explosions of fire-damp. Also called choke-damp.

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Unfortunately, these operations could be pursued only under the most disadvantageous circumstances and surrounded by the greatest possible precautions, due to the frequent heavy falls of roof -- a result of the heating by the mine fire -- and the presence of large quantities of black-damp.

Transactions of the American Society of Civil Engineers, vol. LXX, Dec. 1910 Federal Investigations of Mine Accidents, Structural Materials and Fuels. Paper No. 1171 Herbert M. Wilson