Abstract: Employee #1 and coworkers had begun removing lightweight 2 ft by 8 ft reinforced concrete panels from the deck of a roof. They used a wrecking bar to slide the panels about 3 in. apart so they could route a nylon sling through the opening and around the panels. Employee #1 was kneeling on a panel that had been separated from the other panels. The nylon sling had been dropped through the opening and Employee #1 was reaching under the panel with a crowbar to catch the sling when the panel that he was kneeling on broke. He and the panel fell to the concrete floor. Employee #1 died of massive head injuries.