AT 4:00 AM EE ATTEMPTED TO UNPLUG THE #34 FEEDER BY BLASTING IT. A PLANT OPERATOR FAILED TO TURN OFF THE BAGHOUSE FAN. AT APPROXIMATELY 4:50 AM AN EE NOTICED SMOKE AT THE BAGHOUSE. THE MERT TE AM WAS NOTIFIED & THE FLAMES PUT OUT APPROXIMATELY 15-20 MINUTES LATER. THE PLANT & MERT TEAM HELPED WASH OUT AMBERS FROM THE DUCT WORK. THE PREP PLANT STARTED OPERATING AT 1:00 PM.