The shares of the commodities giant will continue trading on the London and Johannesburg exchanges.
The latest news from junior mining companies operating in Argentina, Brazil, Chile and Ecuador.
Copper production was down 11% in the first nine months, while output in the third quarter fell 15%, the Switzerland-based group said.
Bolivia's state mining company began testing new installations at its Catavi iron and steel foundry as the Andean country seeks to industrialize.
The Peruvian gold-silver producer is continuing its executive shake-up, with the announced retirement of long-serving CFO Carlos Gálvez following the change of its CEO and COO last year.