Top Structural Engineers to Do Autopsy On Twin Towers to Assess Why They Fell
Ronald Hamburger turned on his television on the day of the attack just in time to watch the collapse of the second World Trade Center tower.
"It appeared to me that charges had been placed in the building," said Mr. Hamburger, chief structural engineer for ABS Consulting in Oakland, Calif. Upon learning that no bombs had been detonated, "I was very surprised," said Mr. Hamburger. The buildings "certainly did...