The fire occurred in the exterior old corrugated containers (OCC) stock piles.
Both mills have begun shipping finished products which were manufactured prior to the fire.
Production equipment at the Greenpac mill was not damaged during the fire and normal production is expected to resume shortly.
Start-up of the Norampac mill will not be decided until damage to the stock preparation equipment is fully assessed.
Production at Norampac’s box plants was unaffected as it could compensate with shipments from other mills.
Marc-André Dépin, president and CEO, Norampac said, "We wish to thank the firefighters, police crews, Mayor Dyster and our employees for the amazing work they accomplished despite heavy winds and challenging weather conditions."