Quote by 9/11 Commission

“The National Institute of Standards and Technology has provided a preliminary estimation that between 16,400 and 18,800 civilians were in the WTC complex as of 8:46 am on September 11. At most 2,152 individual died in the WTC complex who were not 1) fire or police first responders, 2) security or fire safety personnel of the WTC or individual companies, 3) volunteer civilians who ran to the WTC after the planes' impact to help others or, 4) on the two planes that crashed into the Twin Towers. Out of this total number of fatalities, we can account for the workplace location of 2,052 individuals, or 95.35 percent. Of this number, 1,942 or 94.64 percent either worked or were supposed to attend a meeting at or above the respective impact zones of the Twin Towers; only 110, or 5.36 percent of those who died, worked below the impact zone. While a given person's office location at the WTC does not definitively indicate where that individual died that morning or whether he or she could have evacuated, these data strongly suggest that the evacuation was a success for civilians below the impact zone.”

Quote by 9/11 Commission