Abstract: At 5:45 a.m. on April 19, 2019, an employee was working for a manufacturer of storage batteries. She was cleaning the floor. Nearby, a coworker was using a hand torch near Line 15. It was part of a wall-mounted hand torch array, or torch box. As the employee was cleaning the floor 0.6 to 0.9 meters (2 to 3 feet) in front of the array, an explosion occurred within the torch box. The explosion dislodged the array or torch cover. Shrapnel from the flying cover struck the employee in the back of her head. She suffered a concussion and a laceration to her head. She was transported to a local hospital for treatment. She was hospitalized.