Southern Copper's $1.2bn Toquepala mine expansion OK’d

[caption id="attachment_822630" align="aligncenter" width="600"] Toquepala is the world’s fifth biggest copper mine. (Image courtesy of Southern Copper)[/caption] Peru has approved Southern Copper's (NYSE:SCCO) $1.2 billion expansion of its Toquepala open-pit mine in southern Tacna, which would allow the miner double the...