NPRNTitleType Of SiteRelationNPRN33711TitleGreat Western Colliery: Hetty Pit Winder House and Headframe, Pontypridd; Ty Mawr CollieryType Of Siten/aRelationAssociated withNPRN275874TitleGreat Western Colliery: Hetty Pit, PontypriddType Of Siten/aRelationPart of
