If you feel the Library should be evacuated because of safety or health concerns -- such as power outages, infrastructure damage, chemical spills or other odors affecting staff and library users:
Call University Police (3-4140 or 3-4444). They can help assess the situation to determine if the hazard requires evacuation or simply moving people from a particular floor or area. They can also contact facilities, the fire department, or other emergency responders if warranted.
Regardless of the timing of the incident, call early so the situation can be evaluated and appropriate action taken.