GRAY, Ky (WYMT) - Crews worked quickly to put out a fire at a sawmill in Knox County Monday morning.
It happened shortly after 8:00 a.m. at Forest Products in Gray, Kentucky.
Workers inside the building told fire fighters they heard some type of explosion before the building caught on fire.
General Sales Manager John Smith says workers came running into the main office saying the building was on fire.
When Smith walked outside, he saw one of the company's two sawmills going up into flames.
"There was fire coming through the roof quite a bit, and the building began to sag where it was getting hot and the transformers exploded. A tremendous amount of fire," said Smith.
Firefighters are not sure what caused the fire, but they say they believe there was some sort of explosion.
"When we got paged, an employee told me that they were upstairs in this building, and they heard an explosion so they came outside and it was around the air tanks underneath them," said Chief Darryl Baker with West Knox Volunteer Fire Department.
At this time, Smith says the building is probably a total loss, but he is thankful all the workers got out safely.
"There were six or seven men working in that building, and they got out safely, and that's the important thing," said Smith.
Even though one building was damaged, Forest Products was open on Monday.
No one was hurt during the fire.
Fire officials say they are still working to determine a cause.