Totino-Grace High School students were evacuated from the Fridley school Friday, but told to remain on campus for nearly four hours after mercury from a thermometer was discovered on the floor of a science classroom.
At 3:30 p.m., school administrators received clearance from emergency personnel that the building was deemed safe and that students could return to collect their belongings. The school was evacuated at 11:45 a.m. School normally ends at 1:50 p.m.
A Hazardous Materials Chemical Assessment Team and the Minnesota Pollution Control Agency found that the mercury was limited to a single classroom and that students were not affected. It had been feared that chemicals might be found on students' shoes.
Parents were alerted by phone and e-mail and updates on the school's web site.
Paul Levy • 612-673-4419