Wood Grinder Explodes at Umatilla Mill - NBC Right Now/KNDO/KNDU Tri-Cities, Yakima, WA |

Wood Grinder Explodes at Umatilla Mill

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 UMATILLA, Ore. - Nobody was injured when a wood-grinding machine exploded at a Umatilla mill, sending heavy chunks of debris flying through the air.

The machine creates wood shavings called hog fuel that is then sent to a Boise Inc. paper mill in Wallula.
Umatilla Fire Chief Mike Roxbury blamed a "catastrophic mechanical failure" for the explosion and fire Monday in the tub grinder's engine compartment. The incident caused about $150,000 in damage.
Nobody was injured, and firefighters kept the flames from reaching the tall piles of wood shavings.
A Sweet Home company is under contract to grind the wood for the Boise plant.