Section 05 MINERAL PRODUCTS 25 Salt; sulphur; earth and stone; plastering materials lime and cement. 25 16 GRANITE, PORPHYRY, ETC, AND OTHER MONUMENTAL OR BUILDING STONE Commodity Code Description 25 16 11 Crude or roughly trimmed 25 16 12 Merely cut, by sawing or otherwise, into blocks or slabs 25 16 20 Sandstone 25 16 90 Other monumental or building stone