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    Manylion
    Hierarchaeth
    Safleoedd Cysylltiedig
    Rhif Archif
    6022626
    Disgrifiad
    RCAHMW drawing (ink on paper) showing plan, section & elevation of Pontneddfechan Gunpowder Works.
    Enw Casgliad
    Drawings Collection
    Cyfrwng
    Graphic.
    Cychwynnwr
    RCAHMW