EMPLOYEE WAS OPERATING A ROOF BOLTER. AS HE WAS LOADING HIS PIN TRAYS, HE REACHED FOR A PIN BOARD AND FELT A PAIN IN HIS LOWER BACK. HE WENT TO THE DOCTOR AND X-RAYS WERE NEGATIVE. HE CONTINUED TO HURT AND ON 8-4-04 HE RECEIVED THE RESULTS OF AN MRI WHICH SHOWED A HERNIATED DISK AT L4 AND 5. HE STARTED MISSING WORK ON 8-4-04 AND IS HAVING BACK SURGERY ON 8-13-04.