CPV code 09241000 designates Bituminous or oil shale in the Common Procurement Vocabulary (CPV 2008), the EU classification used to describe the subject of public contracts.
09241000 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 09240000 (Oil and coal-related products).