Glencore Xstrata raises stake in Africa's copper belt

[caption id="attachment_764531" align="aligncenter" width="600"] Open pits of the Mutanda copper mine seen from the air, via YouTube.[/caption] Glencore Xstrata (LON:GLEN) confirmed Thursday it had acquired an additional 14.5% interest in Mutanda, a copper mine in the province of Katanga, Democratic...