Damage is estimated at more than $1 million from the fire that destroyed a large building at the former Boise Cascade lumber mill at Yakima.
It was reported at 6:30 a.m. Wednesday and burned through the morning.
Yakima Deputy Fire Marshal Ron Melcher told the Yakima Herald-Republic that about 40 firefighters responded from several departments. They suppressed flames that had spread to a second building, and they prevented a large pile of bark from catching fire.
Several explosions apparently were caused by fuel or welding tanks in the building.
No injuries were reported, and there was no word yet on how the fire started.
A fire at the site last September was started by spontaneous combustion at a wood-chipping operation that shut down in April.