EE WAS USING FAST VAC TO DO CLEANUP BETWEEN NORTH & SOUTH VIBRATING PANS. AS HE WAS COMING OUT OF THE TUNNEL ONE OF THE VALVES ON THE SOUTHSET OF PANS SPEWED OUT HOT CLINKER. THE CLINKER WENT BEHIND HIS SAFETY GLASSES AND INTO HIS EYES. DR. PRESCRIBED MEDICATION THUS MAKING THIS A REPORTABLE INJURY.