On September 11th 911.mp3

Listen and write the figures

The world Trade Center, New York (Manhattan)WTC.jpg
On September 11th, , terrorists hijacked American Airlines Flight and crashed it into the northern facade of the north tower at , impacting between the and floors. minutes later, a team of terrorists crashed the similarly hijacked United Airlines Flight into the south tower, impacting between the and floors. The damage caused to the north tower by Flight 11 destroyed any means of escape from above the impact zone, trapping people. However, only a few people managed to successfully pass through it before the tower collapsed. Although the south tower's floors of impact were lower, a smaller number, less than , were killed instantly or trapped, because evacuation of the south tower was ordered immediately after the north tower strike. At a.m., the south tower collapsed due to fire which caused steel structural elements, already weakened from the plane impact, to fail. The north tower collapsed at a.m., after burning for approximately minutes.