Chronology 2007 Zasyadko mine disaster

NOVEMBER 18, 2007 – 101 workers killed, dozens injured (first explosion)
December 1, 2007 – 52 workers injured (second explosion). Rescuers were trying to extinguish the fire with liquid nitrogen and set the plaster wall to isolate the fire.
December 2, 2007 – 5 rescuers killed, 30 injured; gypsum wall was destroyed by explosion (third explosion). ["Four dead in Ukraine mine blast", BBC News, December 2, 2007