NPRNTitleType Of SiteRelationNPRN33888TitlePowell's Llywernog Mine, PonterwydType Of Siten/aRelationAssociated withNPRN301518TitlePonterwyd Lead Mine, PonterwydType Of Siten/aRelationAssociated withNPRN301517TitleLlywernog Silver Lead Mining Museum, Poole's Llywernog Mine, PonterwydType Of Siten/aRelationAssociated withNPRN301520TitleClara Lead Mine, PonterwydType Of Siten/aRelationAssociated with
