I do. I was about a mile from the Grandcamp when it exploded. The shock wave blew my window and blinds across the room into the opposite wall.
The Grandcamp contained about 2,200 tons of ammonium nitrate. The Oklahoma City bombing was estimated to have involved less than 2.5 tons of ammonium nitrate (about 4,800 pounds).
Wow, you were there? Cool.
I remember reading (with morbid fascination) an article about the ship channel explosion in a copy of Popular Science when I was in third grade (1963). It made a permanent impression on me.
I wonder how big the shockwave expanded to? I don't suppose that many who saw it lived to tell the tale.
(steely)