US lawWashingtonRegulationsTitle 296 — LABOR AND INDUSTRIES, DEPARTMENT OFChapter 296-52 — SAFETY STANDARDS FOR POSSESSION, HANDLING, AND USE OF EXPLOSIVES296-52-67225WAC 296-52-67225WAC 296-52-67225. Combustible gases or dustsLast amended: 2002Year: 2026Length: 24 wordsOfficial source Explosives cannot be loaded or used underground where combustible gases or combustible dusts exist unless approved by the Mine Safety and Health Administration (MSHA).PreviousWAC 296-52-67220NextWAC 296-52-67230