Section 05 MINERAL PRODUCTS 25 Salt; sulphur; earths and stone; plastering materials, lime and cement 25 14 Slate, whether or not roughly trimmed or merely cut, by sawing or otherwise, int 25 14 00 Merely cut by sawing or otherwise, into blocks or slabs of a rectangular (incl 25 14 00 10 Merely cut by sawing or otherwise, into blocks or slabs of a rectangular (incl Commodity Code Description 25 14 00 10 00 Slate, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks