EE WAS WORKING WITH A CREW TO COVER MINE OPENINGS INSTALLING CHANNEL IRON SUPPORTS WHILE LIFTING& MOVING THE CHANNEL IRON EE STRAINED HIS LOWER BACK. EE FINISHED THIS SHIFT & WORKED HIS REGULA R SCHEDULE UNTIL 1/25/02 ON 1/28/02 EE CALLED & SAID HE WAS GOING TO DR FOR BACK PAIN