Fragonsets 31452 was on the back of the train hauled by A4 60009 to make shunting
at Norwich and later at Kings Cross easier. Although the engine was running 
this was only for braking reasons on the class 31 and the steamer or 'kettle' on the front
was doing all the work...we would hope so to!
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Photo from James & Martin's Picture Collection Copyright 'Jampics' m.hawkes7@ntlworld.com