Miners have been left underground before. In 1968, a mine explosion in Farmington, W.Va., killed 78 miners. The bodies of 19 were not recovered.

• 历史上矿工有被遗留在矿下的事件。1968年，一个煤矿西弗吉尼亚州法明顿市煤矿爆炸致使78名矿工死亡，至今仍有19具尸体没有找到。