THE EE WAS LIFTING LARGE WOOD BLOCKS WHEN HE FELT A POP IN HIS BACK. THE EE CONTINUED TO WORK REGULAR DUTIES OVER TIME. THE INJURY WAS LATER DIAGNOSED AS A RUPTURE DISK. THE EE UNDERWENT SURGE RY ON JANUARY 10, 2001, TO REPAIR THIS INJURY. THIS WAS THE FIRST DAY OF MEDICAL TREATMENT AND THE FIRST DAY MISSED A RESULT OF THE INJURY.