Test laboratory studies of refractory gold-bearing ores of Magadan Region from the standpoint of their processing by heap leachingYury Rubtsov, Aleksandr Lavrov, Aleksandr Petukhov, Mikhail Kostromin and Aleksandra LavrikE3S Web Conf., 192 (2020) 02015DOI: https://doi.org/10.1051/e3sconf/202019202015