Note gauging devise hanging on the PW hut. We think this was for checking tunnel clearences. Recorded on the East Coast Main Line here Standard 9F 92141 is in charge of an empty coaching stock working , making a fine picture as she emerges from Hadley Wood tunnel in the ' sixties . Whilst most 9F workings were restricted to freight duties , especially on the Eastern Region , one of that Region's allocation might at times appear on a passenger duty , particularly in emergencies and when deputising for a failed Diesel .