Events from just the other day in China cataclysmic detonation of stored and explosive chemicals creating a seismic event on the scale of and having the destructive power of a tactical atomic weapon explosion.
"China explosions: Potent chemical mix behind Tianjin blasts"
A catastrophic accidental detonation of what appears to be ammonia nitrate reminiscent of Texas City in the somewhat distant past!!
Firefighters on the scene exacerbating a difficult situation. Causing in an accidental manner a series of sympathetic detonations that climactic blast a huge store of ammonium nitrate blowing sky-high literally!!
"Chinese authorities are still trying to ascertain what exactly caused a potent mix of chemicals to ignite in a warehouse in Tianjin late Wednesday, triggering blasts that rocked the city."
. . . .
"Authorities had earlier said that the warehouse contained calcium carbide, potassium nitrate and ammonium nitrate."
. . . .
"There were unconfirmed reports that the warehouse contained 700 tonnes of sodium cyanide, stored in wooden boxes or iron barrels."
As from the scene at Tianjin. An car park of about one thousand automobiles totally destroyed, everything within a radius of one mile [1.6 kilometers] from ground zero more or less obliterated!!
Explosions of this sort not so common but not so uncommon either. I am thinking in particular of the West, Texas, USA detonation several years ago and the French AZF fertilizer plant that also was destroyed by an ammonium nitrate explosion of prodigious size. That AZF plant in having been speculated THE WORK OF ISLAMIC TERRORISM!!