A ROOF FALL OCCURRED JUST OUTBY THE TIPS OF THE SHIELDS ON THE TAILGATE END OF THE 16 LEFT LONGWALL FACE. VENTILATION WAS NOT DISRUPTED, BUT ACCESS TO THE TAILGATE ENTRY FROM THE LONGWALL FACE BLOCKED. ESCAPE WAYS ARE ON THE HEADGATE END OF THE LONGWALL. THIS WAS INVESTIGATED BY MSHA INSPECTOR ARCHIE COBURN WHO WAS ON SITE.