Billings firefighters responded to a report of a fire at Cretex Concrete Products, 1521 S. 32nd St. W.
The fire was reported at about 8:40 a.m. in a large lot behind the main concrete plant building and appeared to involve a vehicle.
Fire crews spent time cooling off tanks, including an oxygen tank, in order to prevent them from igniting or exploding.
The cause of the fire wasn't immediately available.
No injuries were reported and fire crews remained at the scene as of 9:30 a.m.
Check back at billingsgazette.com for more details as they become available.