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    Manylion
    Hierarchaeth
    Safleoedd Cysylltiedig
    Rhif Archif
    6028092
    Disgrifiad
    Pwll Du tramroad tunnel, Blaenavon; Photo survey comprising 1 photo taken by D.J. Percival, dated 07/10/94
    Enw Casgliad
    Investigators' Photographs
    Cyfrwng
    Photo.
    Cychwynnwr
    David J. Percival
    Dyddiad
    1994-10-07