ON 1-29-01 AT APPROX 0525 A METHANE GAS IGNITION OCCURRED IN THE FACE OF THE C-4 LONGWALL AT/NEAR 72 SHIELD XCUT 21. THE IGNITION OCCURRED WHEN A FLAMMABLE METAHNE AIF WAS IGNITED WHEN THE DRU M WAS CUTTING ROOF ROCK. THE FLAME EX EXTINGUISHED BY WATER SPRAYS ON DRUM & LASTED NO LONGER THAN 5 SECONDS.