Complex sentence: CODELCO (Corporación Nacional del Cobre de Chile or, in English, the National Copper Corporation of Chile) is the Chilean state owned copper mining company formed in 1976 from the foreign owned copper companies that were nationalised in 1971.
Split into simpler sentences: CODELCO (Corporación Nacional del Cobre de Chile or, in English, the National Copper Corporation of Chile) is the Chilean state owned copper mining company. Formed in 1976 from the foreign owned copper companies that were nationalised in 1971.