DURING KILN SHUTDOWN, EMPLOYEE WAS USING IMPACT WRENCH TO TIGHTEN BOLTS ON THE MID-KILN PROBES AT THE ROTARY KILN BETWEEN THE SHELL AND SHROUD. TO DO THE JOB, HE HAD TO LAY ON HIS BACK OR SIDE , AND HE GOT A FOREIGN BODY IN HIS RIGHT EYE. PHYSICIAN REMOVED FB WITH NEEDLE AND PRESCRIBED MEDICATION.