Antofagasta plc is a London-based Chilean multinational conglomerate. It is one of the most important conglomerates of Chile with equity participation in Antofagasta Minerals, the railroad from Antofagasta to Bolivia, Twin Metals in Minnesota, and other exploration joint ventures in different parts from the world. Antofagasta is listed on the London Stock Exchange and is a constituent of the FTSE 100 Index. Wikipedia