Testing a volcano while burning marshmallows in elementary school... 14 people go to hospital

Elementary school teachers and students who were doing scientific experiments on volcanic activity by melting marshmallows showed symptoms such as dizziness and were taken to the hospital for treatment. Summing up comments from the Chungbuk Education Office on the 1st, at 11:10 a.m. on the same day in Ochang, Cheongwon-gu, Cheongju-si