WENDELL, MN - Valley Woods, a custom woodworking shop, was heavily damaged in a fire Saturday afternoon.

Fire investigators think a spark from a grinder ignited the fire, according to KFGO-AM.

Valley Woods' owner David Jensen, and his brother reportedly escaped the building without injury.

Valley Woods, located about 20 miles south of Fergus Falls, SD, manufactures cabinets and furniture. In addition to the owner, the company employs up to five part-time workers, KFGO-AM reported.

According to KVRR news, the 40-year-old family business suffered a devastating fire to its original shop about 20 years ago. Approximately 80 firemen from 10 fire departments battled the blaze.