炭たん塵じん爆ばく発はつ

noun

coal dust explosion

Technical term used in mining safety and industrial contexts.

• 炭たん塵じん爆ばく発はつを防ふせぐために、坑こう内ないの換かん気きが重じゅう要ようだ。

  Ventilation inside the mine is important to prevent coal dust explosions.