Sierra Gorda | KGHM Corporate Website
The mineralisation of Sierra Gorda was discovered in 2006, and since September 2011, the project has been a joint venture currently controlled by KGHM Polska Miedź S.A. (55%), Sumitomo Metal Mining (31.5%) and Sumitomo Corporation (13.5%). Successive removal of the overburden in order to access the deposit began in 2012 and lasted for two years.