What makes Steel Explode? Scientists have discovered Thermite in the rubble of the explosions. Thermite was used to detonate the buildings. A worker who was in the basement of the Twin Towers, has given sworn testimony that there was a huge explosion in the basement prior to the planes hitting the tower, he survived but his co-worker unfortunately had his skin burnt-off. There was an explosion in the basement then the planes hit. The fact that you continue to use science as a excuse for this wicked act of genocide is very interesting. Either you are willfully ignorant or you purposefully attempt to obfuscate the truth. Their are people who work for intelligence agencies who make a living off of such acts not saying that you are one of those persons.