NPRNTitleType Of SiteRelationNPRN415934TitleMill Floor Tunnel, Maenofferen Slate MineType Of Siten/aRelationPart ofNPRN416202TitleTramway System, Maenofferen Slate MineType Of Siten/aRelationPart ofNPRN415929TitleSmithy, Part of Smithy and Workshop Range, Maenofferen Slate MineType Of Siten/aRelationPart ofNPRN415910TitleWeighbridge and Weighbridge Building, Maenofferen Slate MineType Of Siten/aRelationPart ofNPRN415926TitleSmithy and Workshop Range, Maenofferen Slate MineType Of Siten/aRelationPart ofNPRN415947TitleUnhookers Office, Maenofferen Slate MineType Of Siten/aRelationPart ofNPRN400427TitleMaenofferen Slate Mine, Blaenau Ffestiniog (Maen-Offeren; Maen y Fferem; Maen Offeren)Type Of Siten/aRelationPart ofNPRN415933TitleEngineering Workshop, Part of Smithy and Workshop Range, Maenofferen Slate MineType Of Siten/aRelationPart ofNPRN415931TitleSawmill, Part of Sawmill and Workshop Range, Maenofferen Slate MineType Of Siten/aRelationPart ofNPRN415911TitleStorehouse, Maenofferen Slate MineType Of Siten/aRelationPart of
