 My name is Erso Anderson, I'm a station officer based at Springvale Fire Station. This morning at approximately 6.30am we got a normal brigade director alarm call to our premises in Mills Road, Brayside. There was no further information to indicate that there was going to be a going job at this call so for all intents and purposes originally it seemed like it was going to be a standard alarm. On arrival we noticed there was a whistle of smoke coming out from the factory door on the west side of the premises. The staff that were on location were evacuated. We then were able to give local knowledge that they had a traction system duct burning within the duct line approximately 30 metres long. Access to the duct was compromised due to there wasn't any manholes or any obviously signs that we could actually get water into so we had to go into cooling mode. We did respond down in a later platform and they were able to set up and give root access to be able to put water in through the stack that's on top of the roof. We are now currently just cooling the ducting lines and still trying to make access to the main line just to confirm extinguishment of the fire. The job was interesting in the fact that this was just a normal director alarm brigade to the job that resulted in 25 firefighters and approximately five appliances to combat the incident.