The methane built up silently, first in the ceilings of the Russian coal shaft, then expanding downward, possibly undetected, until an errant spark ignited the cloud, setting off an explosion. Dozens of people — both miners and rescuers — were killed.
No, this wasn’t the tragedy that hit the Listvyazhnaya mine in Russia’s famed Kuzbass coal basin last week. This was another disaster that struck 11 years ago at another mine, Raspadskaya, about a three-hour drive to the southeast, also in the Kuzbass.