Radomiro Tomic (RT) operates an open pit mine that produces both an oxide ore and a sulphide ore. Since 1998 the oxide ore was being treated in a leach SxEw 310kt/a cathode plant and since 2008 the sulphide ore has been treated at the 182kt/d ore Chuquicamata concentrator. This profile analyses only the sulphide line. The leachable ore from RT is analysed in a separate profile. Codelco's strategy for the sulphide reserves of RT involves two phases. Phase I started in 2008 and includes toll treatment of 60 80kt/d ore at the Chuquicamata concentrator. Phase II includes the construction of two 100kt/d ore concentrators to be developed in two stages.