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    Manylion
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    Safleoedd Cysylltiedig
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    NPRNTeitlMath O SaflePerthynasNPRN400379TeitlTrevithick Commemorative Plaque, Merthyr Tramroad, Navigation, AbercynonMath O Saflen/aPerthynasAssociated withNPRN34850TeitlRoad Bridge over Merthyr Tramroad, Pont-y-Gwaith, TreharrisMath O Saflen/aPerthynasAssociated withNPRN34854TeitlGreenfield Bridge;Edwardsville Bridge, Merthyr Tramroad, Quaker's YardMath O Saflen/aPerthynasConsists ofNPRN34831TeitlMorlais Brook Iron Bridge;Merthyr Tramroad Bridge, PontmorlaisMath O Saflen/aPerthynasConsists ofNPRN34848TeitlMerthyr Tramroad, SectionMath O Saflen/aPerthynasConsists ofNPRN34852TeitlVictoria Bridge, Merthyr Tramroad, Quaker's YardMath O Saflen/aPerthynasConsists ofNPRN34849TeitlMount Pleasant Revetment, Merthyr TramroadMath O Saflen/aPerthynasConsists ofNPRN91516TeitlTrevithick Memorial, Merthyr Tramroad, Penydarren Road, Merthyr TydfilMath O Saflen/aPerthynasAssociated withNPRN34853TeitlPlymouth Ironworks: Railway Tunnel;Trevithick's Tunnel, Merthyr Tramroad, Merthyr TydfilMath O Saflen/aPerthynasConsists of