Firefighters remained at the scene of a fire at Manildra Flour Mill on Wednesday morning after spending the night bringing it under control.
Canobolas Zone Rural Fire Service duty officer Nils Waite said seven RFS crews and two Fire and Rescue NSW crews were called out to a fire at the mill at 10.30pm on Tuesday.
The fire started in the cleaning section of the mill.
All employees were immediately evacuated from the site and no employees were injured during the incident.
The incident has been contained and the fire is now under investigation.
The road to Manildra from Parkes is still closed in both directions, last updated on Live Traffic NSW at 6.48pm Wednesday, with diversions sending motorists to Eugowra, then The Escort Way to Cudal and onto Orange.
"They were working along there and they were working along a pipeline where the material gets passed through right back to [a] hopper," Mr Waite said.
"We had a shift change between 3am and 4am. They are still currently there.
"We had a bin of four we [had] to get out."
"It's just working out how to do it safely so we don't get a dust explosion," Mr Waite said.
Although this is not the first fire at the mill, Mr Waite said it is not a regular occurrence.
As at 8.30am Wednesday morning he said there were eight Fire and Rescue NSW staff and 10 RFS volunteers still extinguishing the fire.