A worker pours silver granules into a furnace to produce ingots of 99.99 percent pure silver at the Krastsvetmet nonferrous metals plant in Russia's Siberian city of Krasnoyarsk, March 28, 2011. Krastsvetmet is one of the world's largest players in the precious metals industry. REUTERS/Ilya Naymushin (RUSSIA - Tags: BUSINESS)