College/University (on campus), School / University Salt Lake City, UT – Sprinklers douse fire in University of Utah chemistry lab April 17, 2015 viking210 Authorities say a small explosion at a University of Utah chemistry building was caused by a chemical reaction inside a storage cabinet. Salt Lake City firefighters say the Thursday morning explosion was contained inside a sheet metal cabinet but emitted hazardous chemicals into the air. Salt Lake City fire department spokesman Jasen Asay says firefighters evacuated the building to clear chemical residue from the air and vent smoke. Asay says the explosion caused a small fire, but sprinklers doused it before crews arrived. Classes were canceled and the building is expected to remain closed for hours. Firefighters are investigating what chemicals were stored in the room.