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    Manylion
    Hierarchaeth
    Safleoedd Cysylltiedig
    Rhif Archif
    6028438
    Disgrifiad
    Copy of a large modern general ground plan of Hafod yr Ynys Colliery, originator unknown.
    Enw Casgliad
    Hafod yr Ynys Colliery General Plan
    Cyfrwng
    1 item. Graphic.