EE WAS WORKING AS LONGWALL SHEAR OPERATOR. SOME LARGE PIECES OF ROCK HAD FALLEN OUT & INTO THE FACE CONVEYOR. EE WAS USING AN 8 LB SLEDGE TO BREAK THE ROCK WHEN HE FELT PAIN IN HIS RIGHT SHOUL DER. NOTE: EE CONTINUED TO WORK UNTIL 6-17-02 AT WHICH TIME HE SOUGHT MEDICAL TREATMENT.