What single event signalled the end of Centralia, PA?"

In 1962, a trash fire ignited a seam of anthracite coal beneath Centralia, Pennsylvania, a once-thriving mining town of over 3,000 people. By the mid-1980s, giant plumes of smoke and deadly carbon monoxide gases billowed from fissures in the ground, the local highway cracked and collapsed, trees were bleached white and petrified, as the fire continued to rage unchecked. It wasn't until a young boy nearly died after falling into a smoldering mine subsidence that the government was pressed into action. After estimating the cost of extinguishing the fire at over half a billion dollars, the government instead opted to raze the town and relocate its residents.  more