There was a commercial structure fire in Brewster Friday night.  Brewster firefighters responded to Dunmore Corporation on Danbury Road around 9:30pm and found employees evacuating.  A production line that used hazardous materials was involved in a fire in a machine room.  The Putnam County Hazardous Material Response Team was called in and set up a decontamination station.  Firefighters remained on the scene for hours venting the smoke from the building.  Mutual aid was provided by Danbury, Putnam Lake, Carmel and Lake Carmel fire departments.