Abstract: On May 11, 2001, Employees #1, #2, and #3 were working on a temporary interior wall, slightly over 40 ft in length. The interior wall was built of gypsum board and metal framing and was not fastened to the floor in a proper manner. Each end of the interior wall had its top secured in only three places. While Employees #1, #2, and #3 were installing the plastic barrier, they removed at least one row of the top braces. As a result, the wall came perilously close to being nothing more than a free standing wall. As a result, when the wall was impacted with what in any other circumstances would have been a minor blow of little consequence, the entire wall collapsed. Employees #1, #2, and #3 were stuck by the collapsed wall. Employee #1 sustained cuts and lacerations of his hands, Employee #2 sustained strain and sprain of his head, and Employee #3 suffered from concussion. Even if a warning barrier had been erected to the west of the wall, it would not have been far enough to keep the employees at a safe distance from the wall, so they would not have been struck by the wall when it fell. The wall was 10 ft high. If a bench had been placed outside of the warning barrier, it would still have been closer than 10 ft to the wall.