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According to my well thumbed 1967 USBM A dictionary of mining. mineral and related terms: - "Nottingham system, Barry Mining - A longwall method of working coal seams in which the trams run on a rail track along the face and handloaded at the sides. It follows that the system can only be adopted in relatively thick seams where the trams can travel along the face without any roof ripping. The method is now largely replaced by face conveyors." Regards Graham Quoting "Prof. Ken J. Smith" <[log in to unmask]>: > Dear All, > > One of the several synonyms for Longwall working is 'Barry'. Anyone know > origin of 'Barry' in this context? > > TYIA, Rgds, > Ken Smith. > --