Harraways should be operating again within days after a fire at its Green Island factory this week.
Emergency services were called to the blaze at the Harraway and Sons oat-product plant at 9.50pm on Thursday.
Firefighters from seven fire engines and other vehicles fought the fire, which was extinguished by 11pm.
Harraway and Sons chief executive Stuart Hammer said the damage would have "minimal impact'' on the running of the factory.
Operations were expected to resume on Monday or Tuesday.
The damage was related to a boiler stack in a side building, he said.
There was some damage to flooring, including on the upper levels.
"It's not within the main building so it's less of an issue.''
The official cause was yet to be determined.
He was very pleased staff were evacuated safely.
"It's probably quite a positive result in a bad situation. It's a minor blip in the running of Harraways.''
