2019 Minerals Yearbook
Copper.—oyu Tolgoi llC and Erdenet Mining Corp. (EMC) were the two leading copper mining operators in Mongolia. in 2019, oyu Tolgoi llC's oyu Tolgoi Mine produced 675,000 metric tons (t) of copper concentrate (equal to 146,000 t of Cu content) compared with 725,000 t (159,000 t of Cu content) in 2018; the decrease was owing to the depletion