The Senghenydd colliery explosion occurred in Glamorgan, Wales, killing 439 miners in the deadliest industrial accident in United Kingdom history. An initial methane gas explosion, potentially ignited by electric signaling gear or an industrial shot-fire, sparked a catastrophic coal dust explosion that swept through the underground shafts. The disaster left the coalfield community devastated, with nearly every household losing male relatives.

The tragedy profoundly affected Welsh coalfield poetry and working-class literature, embedding a deep sense of communal grief and anti-industrial anger. Welsh poets utilized the disaster to critique the coal barons who profited from the explosive, unventilated depths of the earth.