FIREFIGHTERS continued yesterday to battle a massive grassfire at Duchess which was sparked when a carriage-load of fertiliser spilled on train tracks.
Duchess is just southeast of Mt Isa, and the grass fire was burning on a 1km-1.5km front, the Department of Community Safety (DCS) says.
Fire crews were called to the scene just after 11am (AEST) on Saturday, after a train carriage tipped at Duchess, spilling about 50kg of phosphate on the tracks.
A DCS spokesman said it's believed several spot fires and the large grass fire were sparked when the fertiliser came in contact with the tracks.
Three fire crews initially began battline the blazes, and they were joined by a fourth yesterday, he said.
"There's no reports of injuries and no property at risk at this stage."
Motorists have been warned to take care if heading in the direction of Ducess.