EE STUCK AN AIR LANCE IN A DISCHARGE PIPE FROM CEMENT SILO (SILO HAS 4 DISCHARGE PIPES). HE NOTICED CEMENT BLOWING OUT OF ANOTHER PIPE. THE CEMENT STOPPED BLOWING AND WHEN HE ATTEMPTED TO PLU G THE HOLE, THE CEMENT STARTED SPEWING AND WENT AROUND HIS GLASSES INTO HIS LT. EYE.