NPRNTeitlMath O SaflePerthynasNPRN95469TeitlElan Aqueduct, Elan Valley Water Scheme, Birmingham Corporation WaterworksMath O Saflen/aPerthynasPart ofNPRN261740TeitlElan Aqueduct: Nant Yr Haidd Aqueduct, Elan ConduitMath O Saflen/aPerthynasAssociated withNPRN32524TeitlElan Aqueduct: Filter Beds, Elan ConduitMath O Saflen/aPerthynasAssociated withNPRN309607TeitlElan Aqueduct: Inlet and Washout Chamber, Caethon SyphonMath O Saflen/aPerthynasAssociated with
