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    Manylion
    Hierarchaeth
    Safleoedd Cysylltiedig
    NPRNTeitlMath O SafleArchifauDelweddauNPRN34029TeitlLlanelly Blast Furnace, near Clydach House, LlanellyMath O SafleFFWRNAIS CHWYTHArchifau9Delweddau3NPRN34633TeitlClydach Ironworks Tramroad Bridge, ClydachMath O SaflePONT REILFFORDDArchifau33Delweddau1NPRN276001TeitlClydach RailroadMath O SafleTRAMFFORDDArchifau20Delweddau4NPRN276002TeitlClydach Coal LevelMath O SaflePWLL GLOArchifau4Delweddau1NPRN34030TeitlClydach Ironworks, ClydachMath O SafleGWAITH HAEARNArchifau101Delweddau23NPRN34371TeitlBrecknock and Abergavenny Canal: Gilwern Embankment, GilwernMath O SafleTRAPHONT DDŴRArchifau10Delweddau3NPRN307962TeitlClydach Railroad: Hafod Arch;Bridge over Nant Melyn, BrynmawrMath O SaflePONTArchifau4Delweddau0