INJURED AND 2 OTHER EE'S WERE USING A 1 1/4 DIAMETER CABLE TO PULL 3 ROCKS BACK AWAY FROM THE THROAT OF THE PRIMARY CRUSHER. AS THEY WERE PULLING CABLE TO ATTACH TO THE LAST ROCK, HE FELT A PA IN IN HIS LOWER BACK, HIS LEFT LEG BEGAN TO FEEL COLD AND NUMB.