Firefighters respond to the scene of a false alarm this afternoon in Building 2 at UNM-LA. Students and staff were evacuated for about 45 minutes being receiving the all clear and returning to class. Dust apparently triggered the alarm. Photo by Jenn Bartram/ladailypost.com

Firefighters at the scene of a false alarm this afternoon in Building 2 at UNM-LA. Photo by Jenn Bartram/ladailypost.com

Firefighters at the scene of a false alarm this afternoon in Building 2 at UNM-LA. Photo by Jenn Bartram/ladailypost.com

Firefighters at the scene of a false alarm this afternoon in Building 2 at UNM-LA. Photo by Jenn Bartram/ladailypost.com

Firefighters clear the scene of a false alarm this afternoon in Building 2 at UNM-LA. Photo by Jenn Bartram/ladailypost.com