No one was injured in Friday night's Worthington Industries cylinders plant explosion and fire, said Fire Chief Tom Lachey of the Jefferson Fire Department.
Employees evacuated the manufacturing plant, 863 Route 307, when a fire broke out at about 10:10 p.m. on the northwest wall and ceiling of the building.
"We feel (the cause of) it was propane-related in the heating units," Lachey said.
Everyone made it out safely, he said.
Area residents heard an explosion followed by sirens, making many wonder what happened.
East Jefferson Street resident Linda Masirovits said she was standing at her kitchen sink at about 10:15 p.m. when she heard a boom.
"It was a really loud, scary, long boom," she said. "It shook our house and sounded like it was right above the roof."