EMPLOYEE REPORTED HE HAD SOME PAIN IN HIS LOWER BACK WHILE HELPING TO MAKE REPAIRS ON A D9 DOZER. HE WAS SEEN AND TREATED AT THE LOCAL HOSPITAL ON 8/11/01, AND RELEASED FOR WORK. ON 11/5/01 HE REPORTED TO WORK BUT LEFT AT THE BEGINNING OF THE SHIFT DUE TO PAIN IN HIS LOWER BACK. HE MISSED HIS FIRST SHIFT OF WORK OF 11/5/01 AND AT THIS TIME WE ARE NOT SURE WHEN HE WILL RETURN.