31.   Numerous firefighters, police officers and other rescue workers who responded to the initial disaster in Lower Manhattan were killed or injured when the buildings collapsed.

32.   No more than five minutes later, the building collapsed, all but suffocating them.

33.   On Monday, buildings collapsed, sections of interstate were closed, power was knocked out and people had to be rescued from rising waters.

34.   Once the building has collapsed, officials hope the remains of those women might be found.

35.   One hundred minutes later, the building collapsed, upper floor falling upon lower floor like a giant accordion quickly losing steam.

36.   On Monday, there was a momentary panic when shrapnel fell from one of the higher floors, and there were fears that the building might collapse.

37.   One official, who spoke on the condition of anonymity, said that the building collapsed because rainwater was allowed to leak through the roof for an extended period.

38.   Otherwise it might break, causing the building to collapse.

39.   Scientists hunting for signs of liquefied soils that could potentially cause buildings to collapse or pipes within them to break have found surprises as well.

40.   Shoddier than the pre-fabricated apartment house that was blown up Thursday, the building had collapsed into a mound of cement, metal and dust.