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Scope

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.

Keywords

Coal and coal products; Coal mine dusting; Lime and limestone products/testing-limestone; limestone for dusting of coal mines, spec; ICS Number Code 73.080 (Non-metalliferrous minerals)

To find similar documents by ASTM Volume:

04.01 (Cement; Lime; Gypsum)

To find similar documents by classification:

73.080 (Non-metalliferous minerals Including mica, fluorspar, etc. Industrial diamonds, see 25.100 Precious and semi-precious stones, see 39.060)

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