EE WAS OPERATING THE WATER TURCK. HE SAID HE WAS TURNING TO THE FINE GRIND PLANT ON THE NORTH SIDE OF THE WREHOUSE, HIT A HOLE WITH THE TRUCK AND HE HEARD HIS BACK POP. AFTERWARDS, HE HAD A PA IN IN HIS BACK AND COULD NOT MOVE WITHOUT IT HURTING. I HAD EE GO HOME AT APPROX. 1430.