Section 05 MINERAL PRODUCTS 25 SALT;SULPHUR;EARTHS AND STONE;PLASTERING MINERALS, LIME AND CEMENT 25 18 RECTANGULAR (INCLUDING SQUARE)SHAPE; DOLOMITE RAMMING MIX. Commodity Code Description 25 18 10 DOLOMITE NOT CALCINED OR SINTERED 25 18 20 CALCINED OR SINTERED DOLOMITE 25 18 30 DOLOMITE RAMMING MIX