Increasing of filtration characteristics of ore bodies in borehole uranium mining Bayan Rakishev, Zhiger Kenzhetayev, Asel Shampikova and Bakytzhan Toktaruly E3S Web Conf., 168 (2020) 00014 Published online: 06 May 2020 DOI: 10.1051/e3sconf/202016800014