Abstract: At 2:00 p.m. on August 30, 2022, an employee who worked as an iron worker was grouting joints at a manfacturing plant construction site. The employee was in the process of completing caulking tasks related to the setting of precast concrete pieces. The employee and his coworkers, also iron workers, had set four concrete roof slabs when the employee noticed the beam that the slabs were setting on started to roll. The employee got back into the JLG just as another coworker (the Foreman) told everyone to get out of the room. About that time, the four columns supporting an interior wall and the adjacent four roof slabs collapsed. The employee was on the east side grouting when the structure collapsed and was crushed and killed.