Miners exposed for short periods to gas-, dust-, fume- and mist-inhalation hazards shall wear permissible respiratory equipment. Dust shall be controlled by the use of permissible dust collectors or other approved methods.
W. Va. Code § 22A-2-48
When respiratory equipment to be worn; control of dust
Official source: West Virginia Legislature. Reproduced from public-domain West Virginia statutes; confirm against the official source for the current text. Not legal advice.