NPRNTeitlMath O SaflePerthynasNPRN309608TeitlElan Aqueduct: Nant Caethon Aqueduct, Caethon SyphonMath O Saflen/aPerthynasAssociated withNPRN309610TeitlElan Aqueduct: Air Valve Chamber, Caethon SyphonMath O Saflen/aPerthynasAssociated withNPRN309611TeitlElan Aqueduct: Outlet, Caethon SyphonMath O Saflen/aPerthynasAssociated withNPRN95469TeitlElan Aqueduct, Elan Valley Water Scheme, Birmingham Corporation WaterworksMath O Saflen/aPerthynasPart ofNPRN309607TeitlElan Aqueduct: Inlet and Washout Chamber, Caethon SyphonMath O Saflen/aPerthynasAssociated with
