Two steel tycoons have kept the top two positions in the 2011 list of Russia’s richest people from Finans magazine.NLMK owner Vladimir Lisin, who topped the list, has seen his wealth rise by $9.5bn to $28.3bn (£17.7bn), thanks largely to rising metal prices.Mikhail Prokhorov of Onexim Group was in second place. Alisher Usmanov, an Arsenal Football Club shareholder, jumped four positions to third.The number of US-dollar billionaires also rose to 114 from 77 in a year.The wealth of the owner of Metalloinvest, metals-to-telecoms magnate Mr Usmanov, was estimated at $19.9bn, compared with Mr Prokhorov’s $22.7bn.Finans magazine ranked Oleg Deripaska, the majority shareholder in steel maker Rusal, fourth with $19.0bn.Chelsea Football Club owner Roman Abramovich dropped two positions in the list to the fifth place.His wealth was estimated at $17.1bn.The only female billionaire on the list was Elena Baturina, wife of the former mayor of Moscow.She dropped 47 positions in the list to 94th place, with the estimated wealth of $1.1bn from her real estate business.Her husband, Moscow Mayor Yuri Luzhkov was sacked by the Russian president in September.The other closely followed list of Russia’s super-rich is usually compiled in the spring by Forbes Russia magazine – BBC