Section 05 MINERAL PRODUCTS 25 Salt; sulphur; earth and stone; plastering materials lime and cement. 25 30 MINERAL SUBSTANCES NOT ELSEWHERE SPECIFIED OR INCLUDED Commodity Code Description 25 30 10 Vermiculite, perlite and chlorites, unexpanded 25 30 20 Kieserite, epsomite (natural magnesium sulphates) 25 30 90 Other