1. Department of Mining & Explosives Engineering, Missouri University of Science and Technology, McNutt Hall, Rolla, MO 65409, USA
2. Department of Geoscience and Petroleum, Faculty of Engineering, Norwegian University of Science and Technology, Andersens veg 15a, 7031 Trondheim, Norway
3. Department of Chemical Engineering and Mineral Process, Universidad of Antofagasta, Antofagasta 1240000, Chile