• Cymraeg
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    NPRN31
    Map ReferenceSO00NW
    Grid ReferenceSO0455006050
    Unitary (Local) AuthorityMerthyr Tydfil
    Old CountyGlamorgan
    CommunityCyfarthfa
    Type Of SiteIRON WORKS
    PeriodPost Medieval
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    Description
    The Ynysfach Ironworks were established in 1801 by the Crawshays as an extension of their works at Cyfarthfa. Nearby is the engine house (NPRN 33724), now restored as a museum.

    RCAHMW, February 2011