ON JULY 28, 2OO3 THE CO MINITOR AT THE 1 LEFT RETURN ""B"" MAINS SIDE MEASURED 55 PPM CO AT APPROX 7:00 AM MINE FOREMAN AND ENGINEER WERE SENT TO THE BACK SIDE OF 1 LEFT NEAR THE BOTTOM OF THE # 1 BLEEDER SHAFT TO OBTAIN BAG SAMPLES OF THE GASES COMING OFF THE GOB. WHEN THEY ARRIVED AT THE BOTTOM OF THE #1 BLEEDER SHAFT THEY OBSERVED SMOKE COMING FROM THE GOB AND THE CO WAS 270 PPM.