https://www.theguardian.com/wo....rld/2026/jan/30/more

More than 200 killed in coltan mine collapse in eastern DRC, officials say | Democratic Republic of the Congo | The Guardian
www.theguardian.com

More than 200 killed in coltan mine collapse in eastern DRC, officials say | Democratic Republic of the Congo | The Guardian

Rubaya mine produces about 15% of the worlds coltan, which is processed into tantalum, used in mobile phones