NPRNTeitlMath O SaflePerthynasNPRN261903TeitlCanal Level Collapsed WorkingsMath O Saflen/aPerthynasConsists ofNPRN261904TeitlCyfarthfa Level Ventilation ShaftMath O Saflen/aPerthynasConsists ofNPRN232778TeitlCyfarthfa Canal, Merthyr TydfilMath O Saflen/aPerthynasPart of
