Possibility of implementation of dry technology of gold-bearing ores roughing: case study of “Gurbey” depositAndrey Matveev, Ivan Lebedev, Evgeniy Lvov, Diulustan Osipov, Dmitry Gavriliev and Ekaterina SleptsovaE3S Web Conf., 56 (2018) 03012DOI: https://doi.org/10.1051/e3sconf/20185603012