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ASTM C737-97

M00003140

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ASTM C737-97 Standard Specification for Limestone for Dusting of Coal Mines

standard by ASTM International, 06/10/1997

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1.1 This specification covers limestone suitable for use as dust in coal mines to prevent coal dust explosions.

Note-In coal mine operations, limestone is dusted onto coal exposures in sufficient amount so that not less than 65% of all loose dust shall be limestone. With such a concentration of limestone, explosions cannot initiate or be propagated from nearby gas explosions. The limestone must be substantially dry in order to dust satisfactorily.