firedamp
/ˈfaɪərˌdæmp/
noun
- A flammable gas, mainly methane, that forms in coal mines and can explode if ignited.
- Miners used safety lamps to detect firedamp before it could cause an explosion.
- The buildup of firedamp in the old tunnel made the rescue operation extremely dangerous.
- Modern ventilation systems help reduce the risk of firedamp in underground mines.