Using of Wide Stopes in Coalless Zones Mined by Shovels and Backhoes Valery Kolesnikov, Oleg Litvin, Juraj Janočko and Andrey Efremenkov E3S Web Conf., 21 (2017) 01031 Published online: 10 November 2017 DOI: 10.1051/e3sconf/20172101031