It seems to me that the government can end the concrete core controversy by producing the original stamped structural plans for WTC 1 & 2. Too bad they allowed the 9/11 Commission to investigate the case without supplying them with the actual approved plans as the foundation of all actions, whether controlled demolition, built to demolish or contributive suicide plane crashes. All of it hinges on a strong case for a courtroom instead of a commission.
Correct. The core was like a big piece of RCP, reinforced concrete pipe, but rectangular.
There were only steel columns surrounding it. They were of the inner wall of the outer steel frameworks that held the floors.