Section 05 MINERAL PRODUCTS 26 Ores, slag and ash. 26 02 Manganese ores and concentrates, including ferruginous manganese ores and concentrates with a manganese content of 20 % or more, calculated on the dry weight 26 02 00 MANGANESE ORES AND CONCENTRATES, INCLUDING FERRUGINOUS MANGANESE ORES AND CONCEN Commodity Code Description 26 02 00 00 MANGANESE ORES AND CONCENTRATES, INCLUDING FERRUGINOUS MANGANESE ORES AND CONCEN