CPV code 14612200 designates Nickel ores in the Common Procurement Vocabulary (CPV 2008), the EU classification used to describe the subject of public contracts.
14612200 is a leaf code — the most specific level of its branch — so it can be used directly as the main CPV code of a contract notice. If it does not quite fit, check the neighbouring codes under 14612000 (Non-ferrous metal ores).