This reminds me of the Texas City chemical explosions of 1947.
The ship SS Grandcamp with2300 tons of 28% Ammonium Nitrate blew up on April 16, 1947 and leveled Texas City, TX.
Same stuff used at OK City with a diesel fuel enhancement.
Powerful stuff that is used all over the world for blasting operations.
Of which, my father was the only survivor remaining from the Texas City Heights Fire Dept. He was out of town the morning of the blast in Alvin, Tx. The blast wiped out the dock where the firefighters stood and no one lived.