TITLE (30 pt Times New roman, Bold, two lines max) . The 50th International October Conference on Mining and Metallurgy 30 September-3 October 2018, Bor Lake, Bor (Serbia) https://ioc.irmbor.co.rs TITLE (30 pt Times New roman, Bold, two lines max) Marko Markovic1, First Name Surname2, Third Author3 1Mining and Metallurgy Institute Bor, Zeleni bulevar 35, 19210 Bor, Serbia, E-mail 2Technical Faculty Bor, University of Belgrade, V.J. 12, 19210 Bor, Serbia, E-mail 3Institution, address, e-mail Text and figures and tables