EE IS A ROOF BOLTER OPERATOR. ON MAY 10, 2001 HESTATED HIS BACK CONTINUED TO TIGHTEN UP AS HE WAS ROOF BOLTING & HE NEEDED TO LEAVE THE COAL MINE. HE STATED HIS BACK HAD BEEN BOTHERING HIM FOR TWO OR THREE DAYS PRIOR TO MAY 10. HE COULD NOT RECALL A SPECIFIC INCIDENT CAUSING HIS BACK TO HURT.