BHP firing 6% of workforce in Chile’s Pampa Norte division

[caption id="attachment_793073" align="aligncenter" width="600"] Escondida mine, the world's largest copper operation.[/caption] Mining giant BHP Billiton (ASX:BHP) is firing around 6% of its workers at Chile’s Pampa Norte division, which encompasses the Spence and Cerro Colorado copper mines, citing rising costs...