At approximately 12:45 pm a large quantity of CH4 gas began blowing from the gob area near the head gate (unknown if it was the roof or floor) and quickly exceeded 1.5% CH4 on the face and soon over 2% CH4 in the bleeders. The panel was evacuated, return air monitored and the CH4 returned to legal levels after about 36 hours. CH4 levels have remained at legal levels since then.