WHEN THE LONGWALL FACE WAS NOT RUNNING COAL, INJURED EE WAS LEANING ON THE FACE CONVEYOR AND STANDING ON DA RAM. SEVERAL OTHER EES WERE PASSING THRU THIS AREA. IT IS BELIEVED THAT THE INJURED EE'S M-20 SCSR GOT UNDER THE VALVE BANK COVER AND CONTACTED THE SHIELD PULL BUTTON. AS HE TRIED TO LEAVE THE AREA, HIS FOOT GOT CAUGHT AND HE RECEIVED A BRUISE.