NPRNTeitlMath O SaflePerthynasNPRN416215TeitlUphaulage Incline to Floor 6, Diffwys Slate QuarryMath O Saflen/aPerthynasAssociated withNPRN415671TeitlMill, Floor 6, Diffwys Slate QuarryMath O Saflen/aPerthynasAssociated withNPRN85487TeitlDiffwys Casson Slate QuarryMath O Saflen/aPerthynasPart of