Dangos 3 canlyniad
Disgrifiad archifolWhitland Abbey Gilfach Quarries,
Whitland Abbey Gilfach Quarries,
Tyrch Quarry,
Tyrch Quarry,
Precelly Green and Rustic Slate Company Limited, co. Pemb.,
Precelly Green and Rustic Slate Company Limited, co. Pemb.,