Stefan Boel, vice president of Copper Refining and member of the managing board at Aurubis Belgium SA/NV, gestures as he speaks during an interview with Reuters in Santiago April 7, 2014. A falling copper price and an improving economy in Europe will lift European smelter and producer Aurubis's sales volumes growth of copper wire this year, from flat growth last year, Boel said on Monday. Picture taken April 7, 2014. REUTERS/Eliseo Fernandez (CHILE - Tags: BUSINESS COMMODITIES)