NPRNTeitlMath O SaflePerthynasNPRN85073TeitlCwmbyrgwm Colliery: ChimneyMath O Saflen/aPerthynasConsists ofNPRN85074TeitlCwmbyrgwm Colliery: ShaftMath O Saflen/aPerthynasConsists ofNPRN85075TeitlCwmbyrgwm Colliery: Water BalanceMath O Saflen/aPerthynasConsists of
