COLUMBIA FALLS, Mont. (AP) — Explosions and a fire rocked a fiberboard plant Tuesday in northwest Montana, but all of the workers inside were safely led from the building, and no major injuries were reported, authorities said.

Residents near Plum Creek Timber Co.’s medium-density fiberboard plant reported that two or three loud explosions shook their homes about 3 p.m. Fire departments and emergency officials from across Flathead County responded to the fire, which was still belching thick plumes of smoke late in the afternoon.