The October 10 propane leak happened in the chemistry lab at Wiscasset Middle High School while students were using Bunsen burners. "It wasn't a smell,” Wiscasset Fire Lieutenant Devin Grover said.

Always follow the lab rules.That means understanding risk and potential hazards. Presenter 1: A hazard is something that can cause harm. Presenter 2: Such as burning yourself on a Bunsen burner or ...