(ICSG) yatangaje ku ya 23 Nzeri ko umusaruro w'umuringa watunganyijwe ku isi kuva muri Mutarama kugeza muri Kamena wiyongereyeho 3.2% uko umwaka ugenda uhita, umusaruro w'umuringa watunganyijwe (harimo electrolysis na electrowinning) uri hejuru ya 3.5% ugereranije n'uwo mu mwaka umwe, kandi umusaruro w'umuringa wavuguruwe uva mu muringa wakoreshejwe uri hejuru ya 1.7% ugereranyije n'uwo mu mwaka umwe. Umusaruro w'umuringa watunganyijwe mu Bushinwa wazamutseho 6% mu gihe cya Mutarama-Kamena ugereranije n'umwaka ushize, nk'uko imibare y'ibanze ibivuga. Umusaruro w'umuringa watunganyijwe muri Shili wari hasi ya 7% ugereranyije n'igihe nk'icyo umwaka ushize, aho umuringa watunganyijwe ugera kuri 0.5%, ariko umuringa watunganyijwe ugera kuri 11%. Muri Afurika, umusaruro w'umuringa watunganyijwe muri Repubulika Iharanira Demokarasi ya Kongo wiyongereyeho 13.5% uko umwaka uhita uko ibirombe bishya by'umuringa byafungurwaga cyangwa inganda zikora amashanyarazi zaguka. Umusaruro w'umuringa utunganyijwe muri Zambiya wiyongereyeho 12% ubwo inganda zitunganya amabuye y'agaciro zasubiraga mu gihe cy'ifungwa ry'umusaruro n'ibibazo by'imikorere mu 2019 no mu ntangiriro za 2020. Umusaruro w'umuringa utunganyijwe muri Amerika wiyongereyeho 14% uko umwaka ugenda uhita ubwo inganda zitunganya amabuye y'agaciro zasubiraga mu bibazo by'imikorere mu 2020. Amakuru y'ibanze yagaragaje ko umusaruro wagabanutse muri Brezili, Ubudage, Ubuyapani, Uburusiya, Esipanye (SX-EW) na Suwede kubera impamvu zitandukanye, harimo guhagarika ibikorwa byo kubungabunga, ibibazo by'imikorere no gufunga inganda za SX-EW.