A gas and coal-dust explosion tore through the Benxihu (Honkeiko) colliery in occupied Manchuria. Ventilation was cut off to contain the fire while miners were still underground, and the entrance was sealed.
The confirmed toll of 1,549 dead represents roughly a third of the workers on shift and remains the deadliest mining accident ever recorded. Working conditions under occupation, including forced labour, are central to accounts of the disaster.
Why this event still matters
Historical incidents shape the rules that protect people today — building codes, evacuation policy, warning systems and inspection regimes almost always trace back to a specific disaster. Studying Benxihu Colliery Explosion alongside current events is how preparedness improves.
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