NPRNTeitlMath O SaflePerthynasNPRN33206TeitlPorthgainMath O Saflen/aPerthynasPart ofNPRN40728TeitlPorthgain LimekilnMath O Saflen/aPerthynasAssociated withNPRN40621TeitlPorthgain QuarryMath O Saflen/aPerthynasAssociated withNPRN40620TeitlSt Brides Slate Quarries;Porth-Gain Slate Quarries, Abereiddy; Blue Lagoon AbereiddyMath O Saflen/aPerthynasAssociated withNPRN40815TeitlPorthgain BrickworksMath O Saflen/aPerthynasAssociated with
