A woman walks near a nickel mine in the arctic city of Norilsk

A woman walks near a nickel mine in the arctic city of Norilsk April 3, 2007. Founded in the 1920s, the Norilsk settlement became a Soviet labour camp for mining in the 1930s and is today, after Murmansk, the largest city north of the Arctic Circle. The Norilsk Nickel mining company is the city’s main employer. REUTERS/Denis Sinyakov (RUSSIA)