Claudio Valigi after winning the championship that season, he was sold to Perugia Calcio and never played on the top level in Italy again, not fulfilling the lofty expectations. In the season 2010-11 he was the manager of Sambonifacese in the Lega Pro Seconda Divisione. On October 4, 2011 he becomes the new coach of Mantova in the Lega Pro Seconda Divisione, in place of the sacked Archimede Graziani. On 28 February 2012 he was sacked. In summer 2012 he was named new coach of Lupa Frascati just promoted in Serie D, but on 17 December 2012 he was sacked. Claudio Valigi
High-level radioactive waste management High-level radioactive waste management High-level radioactive waste management concerns how radioactive materials created during production of nuclear power and nuclear weapons are dealt with. Radioactive waste contains a mixture of short-lived and long-lived nuclides, as well as non-radioactive nuclides. There was reported some 47,000 tonnes of high-level nuclear waste stored in the USA in 2002. The most troublesome transuranic elements in spent fuel are neptunium-237 (half-life two million years) and plutonium-239 (half-life 24,000 years). Consequently, high-level radioactive waste requires sophisticated treatment and management to successfully isolate it from the biosphere. This usually necessitates treatment, followed by a long-term management strategy