2514 Slate, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a square or rectangular shape, slate powder and slate refuse

2514 (01/1988-..) Slate, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a square or rectangular shape, slate powder and slate refuse 25140000 (01/1988-..) Slate, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a square or rectangular shape, slate powder and slate refuse