Crews have been called out to tackle an ongoing fire at the Lafarge Tarmac works in Dunbar.
A full evacuation of the premises has been carried out and crews are now treating the blaze as a chemical incident due to the presence of diesel on site.
A spokeswoman for the Scottish Fire and Rescue Service said four fire engines and an incident support unit were on scene trying to bring the flames under control.
She added: “We received a call to say that there was a fire at the cement kiln at 10.51am and we sent appliances along to attend.
“There was diesel involved and so we upgraded it to a chemical incident.”
Florin Stoiean, Plant Manager at Lafarge Tarmac in Dunbar said: “A small fire occurred at around 11:00am today within the kiln house at Dunbar plant.
“We acted promptly to alert the fire services, and the fire was quickly extinguished.
“No-one was hurt, and there is no issue with emissions.
“As a precaution, we have alerted SEPA, and will support them with any questions they have, as well as conducting our own investigations.”