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, into blocks or slabs of a rectangular (including square) shape 25 14 00 Other 25 14 00 90 Other Commodity Code Description 25 14 00 90 000 Other