from The Century Dictionary and Cyclopedia
- n. 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.
Sorry, no etymologies found.
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.