AT APPROX. 9:30 PM ON MAY 6, 2004, DAMAGE WAS DISCOVERED ON THE #2 KILN ELECTOSTATIC PRECIPITATOR (ESP). INITIAL INVESTIGATION REVEALS THAT AN EXPLOSION MAY HAVE OCCURED INSIDE THE #2 ESP. THE INVESTIGATION IS CONTINUING AT THIS TIME. INVESTIGATION REPORT WILL BE SENT TO VICENNNES UPON COMPLETION.