Show Coal Mine Explosions lons Two main hazards of ol coal mining ar are coal dust and gas Coal dust Is ishi hl hi highly ly explosive The best method of cf stopping an explosion from coal dust Is rock dusting a a method In use for 25 years Sears e rs Rock Hock dusting Is simply applying applying applying ap ap- ap- ap plying pulverized stone to the walls and roofs of the passageways When a local explosion occurs It will throw a cloud of rock dust Into the air along with the coal dust and since rock dust Is Incombustible the explosion will die |