Kupol is an underground operation that utiliises mechanized sublevel mining methods. The processing plant comprises conventional gravity concentrate recovery, followed by whole ore leaching. Merrill Crowe precipitation is used to produce doré bars. Effective December 31, 2011, Dvoinoye was reclassified into the Kupol segment. Dvoinoye is a high grade deposit located 98km north of Kupol. Ore from Dvoinoye is processed at the Kupol mill and Kupol results are reported as a combined operation.