EMPLOYEE WAS SITTING IN A HAUL TRUCK UNDER A SHOVEL BEING LOADED WITH DIRT; AS THE SHOVEL BUCKET WAS DUMPING A LARGE CHUNK OF CLAY INTO THE TRUCK BED, IT CAME APART, HITTING THE INSIDE OF THE TRUCK BED & JARRING THE EMPLOYEE AROUND IN HER SEAT AND HURTING HER BACK AND NECK. DOCTOR PUT HER ON LIGHT DUTY FOR 5 DAYS.