METHANE LIBERATION FROM FRACTURED FLOOR BETWEEN SHIELDS 65+71 IN WALKWAY. METHANE CONTENT AT 4.5PERCENT ALONG LONGWALL TRAVELWAY & 5.2% OBSERVEDNEAR TAIL. MINE WAS EVACUATED & POWER PULLED AT AFFECTED AREA. AN ADDITIONAL GOB CURTAIN ON HEADSIDE WAS INSTALLED REDUCING METHANE CONTENT TO LESS THAN 4% & SUBSEQUENT GROUTING OF FLOOR FRACTURES BETWEEN SHIELDS REDUCED IT TO LESS THAN 1%.