PDFWAC 296-52-67225
Combustible gases or dusts.
Explosives cannot be loaded or used underground where combustible gases or combustible dusts exist unless approved by the Mine Safety and Health Administration (MSHA).
[Statutory Authority: RCW 49.17.010, [49.17].040, and [49.17].050. WSR 02-03-125, ยง 296-52-67225, filed 1/23/02, effective 3/1/02.]