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    Manylion
    Hierarchaeth
    Safleoedd Cysylltiedig
    Rhif Archif
    6018162
    Disgrifiad
    Six Bells Colliery, Monmouthshire; nine c.1991 colour photos taken by British Coal Corporatoion, negatives not held.
    Enw Casgliad
    NMR Site Files
    Cyfrwng
    Photo.
    Cychwynnwr
    British Coal Corporation
    Dyddiad
    c. 1991