The Chattanooga Fire Department responded to a fire at Metalcasting Minerals Technologies on Alton Park Boulevard Thursday evening.

Battalion Chief Ashley May said a hopper was full of combustible materials and a small area was on fire. Firefighters opened the hopper's hatch and applied large amounts of water and foam to the burning coal dust-type material.

No injuries were reported.

Chief May said there was minimal damage to the hopper.

The plant was shut down during and after the fire.

Firefighters are still on the scene. 

Officials said the cause of the fire will most likely be ruled accidental.