1. Department of Mining, Faculty of Geoengineering, Mining and Geology, Wrocław University of Science and Technology, Na Grobli 15, 50-421 Wrocław, Poland
2. VSB—Department of Machine and Industrial Design, Technical University of Ostrava, 17 Listopadu 2172/15, 708 00 Ostrava, Czech Republic
3. Institute of Logistics and Transport, Faculty BERG, Technical University of Košice, Park Komenského 14, 043 84 Košice, Slovakia