Section 05 MINERAL PRODUCTS 25 SALT;SULPHUR;EARTHS AND STONE;PLASTERING MINERALS, LIME AND CEMENT 25 30 MINERAL SUBSTANCES NOT ELSEWHERE SPECIFIED OR INCLUED . Commodity Code Description 25 30 10 VERMICULITE, PERLITE AND CHLORITES, UNEXPANDED 25 30 20 KIESERITE, EPSOMITE (NATURAL MAGNESIUM SULPHATES) 25 30 90 OTHER MINERAL SUBSTANCES N.E.S