Quote Originally Posted by beltman713
I remember reading this too. The towers were basically in three sections, the cores had some type of fire door separating each section that would prevent the core from becoming a chimney in the event of a fire. I would assume this would also work in reverse, preventing a blast of fire from blowing down the core.
What you are referring to is when something is hermetically sealed. And thats exactly what it is designed to do. Keep fires out by preventing oxygen from being present. And yes, it is designed to work in reverse. Unless the blst were strong enough to penetrate the seal.