Glencore Xstrata plc boosted own-sourced copper production by 26% to 1.5Mt in 2013, offsetting a 9% fall in zinc production to 1.4Mt.
Glencore Xstrata plc boosted own-sourced copper production by 26% to 1.5Mt in 2013, offsetting a 9% fall in zinc production to 1.4Mt.