EMPLOYEE WAS OPERATING A FORK TRUCK THAT BECAME STUCK. AS THE OPERATOR OF A GETMAN PROCEEDED TO PUSH THE FORK TRUCK UP THE INCLINE, THE REAR OF THE FORK TRUCK BECAME ELEVATED ON THE FRONT BUMB PER OF THE GETMAN. WHEN THE TWO PIECES OF EQUIPMENT SEPARATED, THE REAR OF THE FORK TRUCK DROPPED ABRUPTLY TO THE GROUND.