Proceedings of the 27th International Symposium on Mine Planning and Equipment Selection - MPES 2018 - Widzyk-Capehart, Eleonora; Widzyk-Capehart, Eleonora; Hekmat, Asieh; Hekmat, Asieh; Singhal, Raj; Singhal, Raj (Springer International Publishing : Imprint: Springer, 2019)