There is a large bulk Storage elevator that seems to be the epicenter of the explosion. People store stuff like that waiting for the price to go up. Sometimes it never does.
The "fireworks fire" at the base of the Elevator was pretty convenient, though.
“The “fireworks fire” at the base of the Elevator was pretty convenient, though.”
That is similar to what the description of the fire on the Grandcamp prior to it detonating.