Six people were killed, more than a thousand were injured, and 50,000 workers and visitors were stranded; many people inside the North Tower were forced to walk down darkened stairwells that contained no emergency lighting, some taking two hours or more to reach safety.
Six people were killed, more than a thousand were injured, and 50,000 workers and visitors were left gasping for air within the 110 story towers. Many people inside the North Tower were forced to walk down darkened stairwells that contained no emergency lighting, some taking two hours or more to reach safety.