Abstract: On May 3, 2008, Employees #1, #2, #3, #4, and #5 were restarting the recovery boiler under a partial-natural-draft. The power boiler was not online at the time. The boiler exploded, and Employee #1 was blown over a standard guard railing on the South side of the sixth floor. He fell down some 25 ft on a scaffold staging. He died from blunt force trauma to the chest. His injuries included lacerations to his both lungs, diaphragm, liver, and thoracic aorta. Employees #2, #3, #4 were burned, and they were hospitalized. Employee #5 sustained sprain and strain of his ankle and was not hospitalized.