EE WAS TRANSPORTING LONGWALL PANS ON A SHIELD DOLLY. COMING DOWN IN THE DIP AT 343 CROSS CUT, THE DRAW BAR BROKE AND THE DOLLY CAME LOOSE FROM ANOTHER DOLLY. SO EE WAS IN THE PROCESS OF JACKIN G THE PAN UP OFF THE LOWBOY SO HE COULD REMOVE THE PIN. WHILE REMOVING THE PIN, THE PAN FELL PINNING THE EE BETWEEN THE PAN AND THE TRACK RAIL.