Because the doors to the stairwells and exits were locked ( a then-common practice Practice to prevent workers from taking Creating unauthorized breaks and to reduce Cause_change_of_position_on_a_scale theft ) , many of the workers who could not escape Escaping from the burning building jumped Self_motion from the high windows .

During `` Evelyn '' he breaks Destroying a microphone stand .

There have been a number of breaks in the investigation Criminal_investigation of the bombing .