The FBI believes the suspect used a substance known as thermite, made from metal shavings and rust, in the devices put in the ballot boxes, agents said. "This is a very volatile mix that can burn ...

Note: Contact The Fire Systems Group at [email protected] [email protected] (email BOTH) ahead of time to have the smoke alarms disabled during the class period when thermite will ...

8 in downtown Vancouver and Oct. 28 in east Vancouver and Southeast Portland contained thermite. He described thermite as a mixture of metal shavings and iron oxide, or rust, commonly used by welders.

“We’re very worried this person may harm himself or others if he continues to experiment with thermite,” said W. Mike Herrington, the FBI special agent in charge in the Seattle office.