Map showing Uranium enrichment and depleted uranium resources worldwide, country by country, in percentages. Uranium enrichment capacities: Wise Uranium Project –1996 data – DOE Report - World depleted uranium stocks: WISE Uranium Project - 1999 data - OECD-NEA report, “Management of Depleted Uranium. A joint report by OECD, Nuclear Energy Agency and the International Atomic Energy Agency, 2001”. Nuclear waste management :In France, ANDRA (National Agency for Radioactive Waste Management) is in charge of the management of all radioactive waste. The agency also monitors research on the storage of high-activity and medium-activity long-lived radioactive waste in deep geological formations. The radioactive waste produced by the nuclear industry is processed differently depending on its radioactivity, lifespan, state and chemical composition. It is then stored under reversible conditions, in surface or subsurface repositories. In Europe, a draft directive on the management of radioactive waste and spent fuel was adopted by the European Commission on March 11, 2010. In the rest of the world, each country has developed its own management strategy. More than 99% of natural uranium ore consists of uranium 238. The fuel used in the nuclear reactors now in operation must contain 3% to 5% uranium 235, the only isotope that permits nuclear fission reactions that generate high energy levels. The process undertaken to increase the proportion of uranium 235 in nuclear fuel is called “enrichment”. Depleted uranium is a byproduct of uranium enrichment and the processing of spent fuel from nuclear power plants. It cannot be used as fuel in today’s reactors, but it is usable in breeder reactors or can be enriched for re-use. Worldwide stocks of depleted uranium totaled 1.2 million metric tons in 1999.