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ECFR SNAPSHOT / CURRENT THROUGH 2026-08-19

30 CFR 75.402

Rock dusting.

CHAPTERCHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
PARTPART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES
SUBPARTSubpart E—Combustible Materials and Rock Dusting

CURRENT PUBLIC TEXT

[Statutory Provision]

All underground areas of a coal mine, except those areas in which the dust is too wet or too high in incombustible content to propagate an explosion, shall be rock dusted to within 40 feet of all working faces, unless such areas are inaccessible or unsafe to enter or unless the Secretary or his authorized representative permits an exception upon his finding that such exception will not pose a hazard to the miners. All crosscuts that are less than 40 feet from a working face shall also be rock dusted.