Fire-damp is composed chiefly of methane with varying percentages of other gases.
It is the natural gas given off by coal and carbonaceous strata in coal mines, or it may occur under great pressure in porous rocks adjacent to a coal seam, where it has been imprisoned by an overlying bed of non-porous rock. In such cases the gas may be stored under enormous pressure both in the coal and the adjacent strata. Seepage, blowers, feeders, and outbursts release this pressure. Seepage is the steady oozing out of gas from coal and other strata through pores or tiny fissures. Blowers or feeders are issues of gas through fissures or holes which often have a hissing sound and frequently cause great accumulations. Explosions or out bursts often occur when coal is being worked containing gas under enormous pressure. As soon as the face is cut or broken great blocks of coal are projected violently from the face, with fatal results to the men working on the face.
Fire safety is the number 1 priority of fire dancing.
Don't twirl in areas that are a fire danger, for example with overhanging trees, dry grass or loose foliage.
Never fire twirl alone, especially if you are new to fire dancing -- a second person can watch over your safety while you are using fire and help in case of any accident.
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