(ShareCast News) - Antofagasta has agreed to sell the Michilla mine to Chilean mining group Haldeman Mining Company for up to $52m following the closure of the mine at the end of last year. The deal includes the open pit mine, the underground mine, the cathode production plant and various mining properties.Antofagasta will retain the acid terminal and other facilities located at Caleta Michilla, which are currently used by its Centinela and Antucoya mining operations.