NPRNTeitlMath O SaflePerthynasNPRN91752TeitlPentre Smelting; Lead Smelting Works, Devil's BridgeMath O Saflen/aPerthynasAssociated withNPRN91747TeitlCwmystwyth Lead Mines: Bonsall's Level FawrMath O Saflen/aPerthynasConsists ofNPRN33832TeitlCwmystwyth Lead Mines: Dressing MillMath O Saflen/aPerthynasConsists ofNPRN33833TeitlCwmystwyth Lead Mines: Office and SmithyMath O Saflen/aPerthynasConsists ofNPRN33834TeitlCopa Hill, Cwmystwyth, Comet Lode OpencastMath O Saflen/aPerthynasConsists of
