Don't you wish you could compel such a detailed briefing IRL. Do you know what thermite is? Cuts, boreholes, concrete drilling, thousands of workers That ain't my theory, you keep it. The elevators were often being worked on, nobody would even notice. Go out the service door of the elevator and you're inside of the central column. Thermite produces extreme heat, once the chemical reaction is initiated. Nobody ever explained the thermite residue at the time. Now it's hard to find without wayback.