There were many reports about an explosion in the basement of the north tower. For example, janitor William Rodriguez reported that he and others felt an explosion below the first sub-level office at 9 AM, after which co-worker Felipe David, who had been in front of a nearby freight elevator, came into the office with severe burns on his face and arms, yelling "Explosion! explosion! explosion!"
Rodriguez's account has been corroborated by Jose Sanchez, who was in the workshop on the fourth sub-level. Sanchez said that he and a co- worker heard a big blast that "sounded like a bomb," after which "a huge ball of fire went through the freight elevator."
Engineer Mike Pecoraro, who was working in the sixth sub-basement of the north tower, said that after an explosion he and a co-worker went up to the C level, where there was a small machine shop. "There was nothing there but rubble," said Pecoraro. They then went to the parking garage, but found that it was also gone. Then on the B level, they found that a steel-and-concrete fire door, which weighed about 300 pounds, was wrinkled up "like a piece of aluminum foil." Having seen similar things after the terrorist attack in 1993, Pecoraro was convinced that a bomb had gone off.
Given these testimonies to explosions in the basement levels of the towers, it is interesting that Mark Loizeaux, head of Controlled Demolition, Inc., has been quoted as saying: "If I were to bring the towers down, I would put explosives in the basement to get the weight of the building to help collapse the structure."
Multiple Explosions
In June of 2002, NBC television played segments from tapes recorded on 9/11. One segment contained the following exchange, which involved firefighters in the south tower:
Official: “Battalion 3 to dispatch, we've just had another explosion.”
Official: “Battalion 3 to dispatch, we've had an additional explosion.”
Dispatcher: “Received battalion command. Additional explosion.”
So the question arises: Why these oral histories kept from the public for four years?
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