§ 57.22106. Dust containing volatile matter (I-C mines).
52 words·~1 min read·
/us/cfr/t30/s§ 57.22106·A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
Dust containing volatile matter shall not be allowed to accumulate on the surfaces of enclosures, facilities, or equipment used in surface milling in amounts that, if suspended in air, would become an explosive mixture. An explosive mixture of dust containing volatile matter is 0.02 ounce or more per cubic foot of air.