WATCH: The moment a Sydney factory explodes
At least 100 firefighters have managed to stablise a massive factory fire in Sydney's south-west.
The huge inferno broke out at Revesby around 11 this morning.
7News understands the fire started an automotive business that uses highly flammable chemicals.
Drivers have been told to avoid the area as thick black smoke from the flames affects visibility.
Revesby factory fire now contained. What happened a split sec later singed my eyebrows @7NewsSydney pic.twitter.com/gIskQhOo4h
— Damien Smith (@DamienSmith_7) October 17, 2014
Two people have been treated for smoke inhalation, and up to 100 people have been evacuated from two industrial structures as a result of the blaze.
Black smoke can be seen billowing from the hectare-long site and Fire & Rescue NSW has warned this could affect nearby Milperra Road.
Revesby factory fire being fought by an aerial applicants @7NewsSydney pic.twitter.com/caawuBEhzw
— Damien Smith (@DamienSmith_7) October 17, 2014
Revues by plastics factory fire. Huge @7NewsSydney pic.twitter.com/evH9EIlvpF
— Damien Smith (@DamienSmith_7) October 17, 2014
Ambulance officers have set up a command post to support firefighters and evacuees.