81.   Most of them had been trapped on upper floors as black smoke billowed round them.

82.   Mike said the only access to the upper floors was an old wooden stairway.

83.   No part of the building, he said, was left untouched by the blast, with one wall ripped away and the debris from upper floors pancaked below.

84.   No part of the building, he said, was left untouched by the blast, with one wall ripped away and the debris from upper floors flattened below.

85.   Offices for student clubs are stacked on the upper floors of the Broadway wing.

86.   Of course, as with most trends, the migration to upper floors has its exceptions.

87.   On the upper floors, in fact, the dropping ceilings become almost oppressive.

88.   On the upper floors, windows have been punched through the walls, even though the view is often only of the roofs of lower buildings nearby.

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

90.   Only light smoke was showing on the upper floors of the warehouse when Worcester firefighters searched for homeless men and women.