EMPLOYEE WAS ATTEMPTING TO WOMA GUN IN A PORT THAT HAD MATERIAL PLUGGED IN IT. WHEN HE SQUEEZED THE TRIGGER THE WATER HIT THE HOT MATERIAL AND HOT DUST AND STEAM CAME BACK TOWARDS THE EMPLOYE E. THE MATERIAL WENT INTO HIS GLOVE AND UP HIS SHIRT SLEEVE. EMPLOYEE DID NOT MISS TIME UNTIL 5-15-02.