Only 16 individuals who were inside the collapsing North Tower survived and were rescued, and they were all trying to evacuate via stairwell B located in the center of the building. 4 people who were in the concourse area between the Twin Towers survived and either saved themselves or were rescued.
Twin Towers Collapse\n\n Only six people in the World Trade Center towers at the time of their collapse survived. Almost 10,000 others were treated for injuries, many severe.