TH EE WAS LYING ON HIS BACK INSIDE THE #3 COAL MILL ASSISTING ANOTHER EE TO INSTALL A NEW SIDE LINER IN THE MILL. AS THE EE WAS POSITIONING THE LINER INTO PLACE WITH HIS ARMS, HE EXPERIENCED P AIN IN HIS LEFT SHOULDER. THE EE BEGAN LOSING TIME ON 5-8-02 PER DOCTOR'S ORDER.