If you remember that explosion in Tianjin China a few years ago (2015), that was the result of 800 tons of ammonium nitrate igniting.

Reports coming out say this was the result of 2,750 tons ammonium nitrate igniting.

I know there are still a ton of unknowns, but keep in mind this kind of thing is a sad feasibility anywhere in the world with rampant regulatory capture and neoliberal ideals.