Concept of workings reuse with application of resource-saving bolting systems Volodymyr Bondarenko, Iryna Kovalevska, Oleksandr Husiev, Vasyl Snihur and Ildar Salieiev E3S Web Conf., 133 (2019) 02001 Published online: 25 November 2019 DOI: 10.1051/e3sconf/201913302001