An interview with an explosives expert.
Undicisettembre: In your opinion, would it be possible to prepare such big buildings for a controlled demolition without anyone noticing?
Brent Blanchard: To prepare those buildings for being demolished would take a lot of preparation. You would need a lot of people involved or you would need a few people for a very long time: weeks minimum, months probably. And they need direct access to the columns. They would not only need access to the buildings undetected but they would need access to the H-beams. They would need to do something to pre-weaken those flanges. There's work that needs to be done or the explosives just wouldn't work.
So you would need people to go inside the building for a long time, and people in the offices would obviously notice that there's something going on. You would also need all these people working on the columns – and witnesses - to stay completely silent about this for many years afterward and not tell anyone, not even their parents or their wife. Not even on their death bed.
Undicisettembre: If you actually had to demolish buildings like the Twin Towers, what kind of explosives would you use?
Brent Blanchard: You’d have to use something that causes the steel to fail: linear shaped charges, RDX materials, C4, very powerful high-velocity stuff.
I have heard thermite mentioned. That's not practical at all. Again you need a very, very high velocity, very strong military-grade explosive material.
Undicisettembre: Since you already mentioned thermite, let's proceed with this topic. What do you think of thermite? Is it even vaguely possible to demolish the Twin Towers and 7 World Trade Center with thermite?
Brent Blanchard: No. In explosive demolitions thermite is never used.
In order for thermite to work you have to have a release of the chemical and the chemical has to actually cause the steel to deteriorate. I don't how they think it can be done to an H-beam, or to any very thick steel beam. Thermite doesn't work horizontally, it works vertically. You can't cause thermite to cut horizontally through steel. You can't attach thermite to a bunch of columns, dozens and dozens of columns, and expect it to start cutting clean through all those columns at a predetermined time or especially finish at the same time. I don't understand how it can even theoretically occur. And it's never been articulately explained by the theorists.
Thermite folks just tend to assert that a bunch of guys went in there, put thermite on columns that happened to already be exposed, them somehow triggered it all, and the thermite somehow cut horizontally through a bunch of columns at the same time and caused the building to fail. That makes no sense whatsoever.
Thermite also burns very hot but very slow and it's uncontrolled. When you see tests for thermite you often see it burning on a steel plate, it creates a lot of fire and reaction, but none of these reactions were seen in the Twin Towers. And again, it doesn't burn horizontally through columns that are load bearers. I don't know how it can happen.
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