Firefighters are continuing to tackle a blaze at a bio-disel firm in Hexthorpe.
The blaze is thought to have started at a firm named locally as Ample Fuel,
The fire has spread to neighbouring units on the industrial business park including the Stuffing Plant specialising in stuffing large volumes of toys, teddies and bean bags.
Explosions could be heard coming from the industrial units as residents lined the streets watching in shock.
Huge clouds of black smoke billowed from the building and could be seen by residents across Doncaster.
Trains have been delayed and nearby residents told to close windows and doors following the blaze that started in Albion Terrace just after 8am this morning.