WHILE DESCENDING THE LADDER ON THE HAUL TRUCK HE WAS OPERATING IN THE QUARRY, THE EE FELT A PULL IN HIS LOWER BACK AT THE BOTTOM STEP. HE WAS STILL HOLDING ON TO THE HANDRAIL AT THE TIME. HE SAW DR. ON 3/18/03, AT WHICH TIME HE WAS GIVEN OSTEOPATHIC MANIPULATIVE TREATMENT.