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    Tredomen Engineering Works;Powell Duffryn Steam Coal Co. Ltd. Works, Tredomen

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    NPRN260004
    Map ReferenceST19SW
    Grid ReferenceST1369094690
    Unitary (Local) AuthorityCaerphilly
    Old CountyGlamorgan
    CommunityGelligaer
    Type Of SiteENGINEERING WORKS
    PeriodModern, 20th Century
    Description
    Modern manufactory near Ystrad Mynach.