Abstract: At approximately 2:13 p.m. on June 20, 2006, Employees #1 through #7, including a recently-hired project supervisor, were installing 72-ft-long pitched roof trusses. A 35-ton crane was provided to hoist the trusses. Two employees were on the walls to secure each end of the truss to a nailing strip, three employees were on top of the truss, and two were in the truss webbing to install the temporary bracing. The employer had stopped work earlier to have employees install additional temporary bracing. As employees were installing bracing to a truss that had just been hoisted in place, Employee #1 observed a truss starting to break. As the seven employees started to move away from the breaking truss, it collapsed, causing the collapse of the remaining installed trusses. Six of the employees fell to the concrete floor of the building. The project supervisor was stranded on the top of a wall until he was rescued by the Fire Department. All seven employees were transported to Scotland Memorial Hospital with unspecified fractures. Employees #1 through #3 were admitted for treatment.