What's funny, RO..I think I have actually come up with an idea of how regular ole thermite could be used to cause a vertical core column of the WTC to fail.
If anyone wants to hear my "Macgyverism" just let me know.
Heh-heh! Sure, I'd like to hear it.
I realize you could use something like firebricks (refractory blocks) with a deep groove cut into the them ans placed all the way around the beam, but the installation time needed for SO many beams would be weeks without hundreds of installers working. Hardly a practical approach.
Bu I'd still like to hear what you have in mind - maybe it's much better.