A shekarar 2021, ƙungiyar bincike ta jan ƙarfe ta duniya (ICSG) ta ba da rahoto a ranar 23 ga Satumba cewa fitar da jan ƙarfe mai tsafta a duniya daga Janairu zuwa Yuni ya karu da kashi 3.2% a kowace shekara, fitar da jan ƙarfe mai guba (gami da electrolysis da electrowinning) ya karu da kashi 3.5% fiye da na wannan shekarar, kuma fitar da jan ƙarfe mai tsafta da aka samar daga jan ƙarfe mai guba ya karu da kashi 1.7% fiye da na wannan shekarar. Haɓakar jan ƙarfe mai tsafta a China ya karu da kashi 6% a lokacin Janairu-Yuni idan aka kwatanta da shekarar da ta gabata, a cewar alkaluman hukuma na farko. Haɓakar jan ƙarfe mai tsafta a Chile ya ragu da kashi 7% idan aka kwatanta da lokacin da ya gabata, inda jan ƙarfe mai guba ya karu da kashi 0.5%, amma jan ƙarfe mai guba ya ragu da kashi 11%. A Afirka, samar da jan ƙarfe mai tsafta a Jamhuriyar Demokradiyyar Kongo ya karu da kashi 13.5% a kowace shekara yayin da sabbin ma'adanai na jan ƙarfe suka buɗe ko kuma masana'antun hydrometallurgical suka faɗaɗa. Samar da tagulla mai tsafta a Zambia ya karu da kashi 12 cikin 100 yayin da masu narkar da tagulla suka warke daga rufewar samarwa da matsalolin aiki a shekarar 2019 da farkon 2020. Samar da tagulla mai tsafta a Amurka ya karu da kashi 14 cikin 100 duk shekara yayin da masu narkar da tagulla suka warke daga matsalolin aiki a shekarar 2020. Bayanan farko sun nuna raguwar samarwa a Brazil, Jamus, Japan, Rasha, Spain (SX-EW) da Sweden saboda dalilai daban-daban, ciki har da rufewa don gyarawa, matsalolin aiki da kuma rufe masana'antun SX-EW.