ON 3/23/02 THE INJURED CAME TO THE MINE WITH AN EXCUSE FROM THE CHIROPRACTOR. HE STATED THAT HIS BACK WAS HURTING AND HE DIDN'T KNOW HOW HE HURT IT. HE SAID HE HAD AN EXCITING WEEKEND. ON 3-28 -02, HE STATED THAT ON 3-23-02 TOWARD THE END OFHIS SHIFT HIS BACK STARTED HURTING. HE KNEW HE WAS GOING TO BE OFF A DAY SO HE DIDN'T SAY ANYTHING ABOUT IT. HE DIDN'T KNOW HOW HE WAS HURT.