|Before 9/11 there was never a collapse of a steel framed building caused by fire in the entire history of modern architecture — But on September 11, 2001 it happened three times in a matter of hours in one city. It hasn't happened since.|
Authorities say a fire that broke out about halfway up the John Hancock Center, one of Chicago's tallest skyscrapers, has been put out. Five people were injured.
|The John Hancock Center in Chicago caught fire but didn't collapse: It must have|
contained "superman steel."