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    Manylion
    Hierarchaeth
    Safleoedd Cysylltiedig
    Rhif Archif
    6065856
    Disgrifiad
    A typed descriptive account with a pencil sketch plan of Frongoch mine engine house.
    Enw Casgliad
    NMR Site Files
    Cyfrwng
    Graphic, Text.
    Cychwynnwr
    Mr Anthony J. Parkinson, RCAHMW
    Dyddiad
    1984-07-13 to 1984-09-21