The logo of commodities trader Glencore is pictured in front of the company's headquarters in Baar

Reuters
The logo of commodities trader Glencore is pictured in front of the company's headquarters in Baar
The logo of commodities trader Glencore is pictured in front of the company's headquarters in the Swiss town of Baar November 20, 2012. REUTERS/Arnd Wiegmann
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