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But all the reports so far agree on the mechanics of what happened: Poorly maintained machines cutting into sandstone created a spark that ignited both a small amount of naturally occurring methane gas and a massive accumulation of explosive coal dust. Malfunctioning water sprayers allowed what could have been a small flare-up to become an epic blast that traveled seven miles of underground corridors, doubling back on itself and killing men instantly. All three also say the explosion could have been prevented or contained. Had the mine been sufficiently dusted with pulverized limestone to render the coal dust inert, the spark wouldn't have had the fuel to propagate.
[Associated
Press;
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