v Mines me methane (garm gas) kha mil sakti hai?
§Or
v Where we can find methane in mines?
Ø Chuki methane gas hawa se halki hoti hai jiska specific gravity 0.559 hai, issliye ye gas roof ke najdik , roof cavities , roof-cracks,face me, rise gallery, base hole, dyke and fault ke najdik band working me , goaf edge me , blind end gallery or waisea jagaho par jaha poor ventilation ho rahi hai.
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