The engineers were still in attendance at around 2:50pm on the 21st when the gas ignited and exploded, killing at least 21 people and injuring around 100.
エンジニアは21日の午後2時50分ごろにも来ていたが、その時ガスが引火・爆発し、最低でも21人が死亡し約100人が負傷した。