2LaneCruzer
Super Member
The one in Texas city started with a ship with a hold full of Ammonium Nitrate, with an adjoining hold full of elemental Sulfur. The Sulfur caught fire, set off the Ammonium Nitrate, which caused another ship to catch fire and explode and spread to some warehouses that exploded. That's what I recall when I researched it 40 years ago.