PROMONTORY -- Authorities say a 29-year-old Tooele man was injured after a small explosion on the roof of the Autoliv plant in Box Elder County.
The Salt Lake Tribune reports the incident happened about 10:30 a.m. Sunday in Promontory.
Box Elder County Chief Deputy Kevin Potter says the man was working on an air conditioner on the roof when a flash fire erupted and burned his arms and face.
Potter says the man was airlifted to a Salt Lake City hospital and is expected to survive.
Investigators were looking into the cause of the explosion. They say it didn't damage the building or injure any other people.
Autoliv is a company that designs and manufactures car safety systems.