THUNDER BAY – Thunder Bay Fire Rescue crews remain on the scene at Resolute Forest Products sawmill after a fire near the boiler system that uses oil experienced a small explosion. According to Thunder Bay Fire Rescue platoon chief, Shawn Merrifield, crews were called to the sawmill on Darrell Ave. early Monday morning after receiving reports of an automatic fire alarm. The call turned out to be a false alarm. However, a power outage caused a circulating pump in the boiler system to fail, which uses hot oil to heat the kilns.