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    Manylion
    Hierarchaeth
    Safleoedd Cysylltiedig
    Rhif Archif
    6025491
    Disgrifiad
    Archaeological survey of Benallt Iron and Mangenese Mine, incorporating Rhiw and Ty Canol mines, carried out for Gwynedd County Council.
    Enw Casgliad
    Additional Information
    Cyfrwng
    Text, Photo, Cartographic.
    Cychwynnwr
    Armstrong Wardell
    Dyddiad
    1992-11