2021 Umwaka w'umwaka, International Copper Community (ISCG) yatangaje ko ku ya 23 Nzeri ko isi yatunganije ibisohoka muri Mutarama kugeza muri Kamena, umwaka w'imyaka itari mike, harimo n'imyanda ya electrolytic) ni 3.5 % hejuru yuwo mwaka umwe, kandi umusaruro wumuringa wavuguruwe wakozwe mumyanda ni 1.7% kurenza iyo umwaka umwe. Umusaruro utunganijwe w'Ubushinwa wazamutseho 6 ku ijana mu gihe cya Mutarama-Kamena guhera mu mwaka mbere, nk'uko imibare ibanza abiteganya. Ibisohoka bya Chili byatunganijwe byari 7% munsi yigihe kimwe cyumwaka ushize, hamwe na electrolytic inoze muri 0.5%, ariko electrorefining, ariko electrorefining umuringa wa 11%. Muri Afurika, umusaruro w'umuringa utunganijwe muri Repubulika Iharanira Demokarasi ya Kongo wiyongereyeho 13.5 ku mwaka ushize - mu gihe cy'amabuye y'agaciro. Umusaruro w'umuringa utunganijwe muri Zambiya wiyongereyeho 12 ku ijana kuko ibibazo byo guhagarika umusaruro no mu ntangiriro z'imyaka 14% by'umwaka. Amakuru ya Smorter yerekanye umusaruro muri Berezile, Ubudage, Ubuyapani, Uburusiya, Spain (SX-EW) na Suwede kubwimpamvu zitandukanye, harimo no guhagarika ibibazo bitandukanye no gufunga ibimera bya SX-EW.