INJURED WAS CLEANING AROUND #8 BELTHEAD. HE WENTTO THROW A SHOVEL FULL OF GOB ONTO THE BELT AND HEARD SOMETHING POP IN HIS BACK. THE BELT IS APPROX. 10'-11'HIGH IN THIS AREA. HE BEGAN HAVING SHARP PAINS IN HIS LOWER BACK. HE WAS TAKEN TO THE HOSPITAL AND DIAGNOSED WITH AN ACUTE MUSCLE STRAIN.