2021 umwaka-ku-mwaka, umuryango mpuzamahanga w’ubushakashatsi bw’umuringa (ICSG) watangaje ku ya 23 Nzeri ko isi yatunganijwe n’umuringa kuva muri Mutarama kugeza muri Kamena yazamutseho 3,2% umwaka ushize, umusaruro w’umuringa wa electrolytike (harimo na electrolysis na electrowinning) ni 3.5 % hejuru kurenza iyumwaka umwe, naho umusaruro wumuringa wongeye kuvuka ukomoka kumuringa wimyanda ni 1.7% ugereranije nuwo mwaka.Umubare w’umuringa watunganijwe mu Bushinwa wazamutseho 6 ku ijana mu gihe cya Mutarama-Kamena kuva umwaka ushize, nk'uko imibare ibanza yabigaragaje.Chili yatunganijwe mu muringa yari munsi ya 7% ugereranije n’icyo gihe cyashize umwaka ushize, hamwe n’umuringa utunganya amashanyarazi wazamutseho 0.5%, ariko umuringa w’amashanyarazi wagabanutseho 11%.Muri Afurika, umusaruro w’umuringa utunganijwe muri Repubulika Iharanira Demokarasi ya Kongo wiyongereyeho 13.5 ku ijana umwaka ushize uko ibirombe bishya by’umuringa byafunguwe cyangwa ibihingwa bya hydrometallurgiki byagutse.Umusaruro w’umuringa utunganijwe muri Zambiya wiyongereyeho 12 ku ijana mu gihe uruganda rukora ibicuruzwa byakuwe mu ihagarikwa ry’ibicuruzwa ndetse n’ibibazo by’imikorere mu mwaka wa 2019 no mu ntangiriro za 2020. Umusaruro w’umuringa watunganijwe muri Amerika wazamutseho 14 ku ijana umwaka ushize kuko inganda zasubizaga ibibazo mu mikorere muri 2020. Amakuru abanza yerekanye igabanuka ry'umusaruro muri Berezile, Ubudage, Ubuyapani, Uburusiya, Espagne (SX-EW) na Suwede kubera impamvu zitandukanye, harimo guhagarika ibikorwa byo kubungabunga, ibibazo by'imikorere no gufunga inganda za SX-EW.