SALISBURY, NC (WBTV) - Officials with the Salisbury Fire Department say a blast from inside a large furnace blew a steel door some fifty yards across the room at the Granges facility on Jake Alexander Boulevard.
It happened just after 2:20 pm on Sunday afternoon.
Fire officials say three people working inside the plant were assessed by Rowan County Emergency Medical Services, but no one had to be transported to the hospital.
A person who arrived at the plant claiming to be with Granges refused comment.
The furnace and the rear of the building had extensive damage.
Several residents who live nearby reported that they heard the blast and that their homes shook.