On December 14, 2023, at 8:40 p.m., three employees were inspecting milling machines for startup. A few of the sleeves on the mill drum needed to be changed out. The injured employee was trying to input a sleeve on the mill drum using a hammer. The hammer hit the edge of the drum, which caused a metal piece to splinter off and strike the employee's cheek just below the left eye. The metal splinter embedded in the back of their eye socket, resulting in pain, swelling, and bleeding that required hospitalization.