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    Manylion
    Hierarchaeth
    Safleoedd Cysylltiedig
    Rhif Archif
    6429356
    Disgrifiad
    No2 adit to West Twll opencast, looking S through adit into West Twll, Rhosydd Slate Quarries complex.
    Enw Casgliad
    Investigators' Photographs
    Cyfrwng
    Photo.
    Cychwynnwr
    Stephen R. Hughes
    Dyddiad
    1996-09-01