Sky News has returned to the Democratic Republic of the Congo to try to find two young boys we met previously, who were working in one of the country’s many cobalt mines. A charity has offered to educate and care for them.

More than half the world’s supply of cobalt is in the DRC. It’s used extensively in smartphones.

Multinational corporations have promised to improve conditions for child miners – but as Sky’s special correspondent Alex Crawford found out – there’s little evidence of that in the former Katanga Province.

View the original report: https://youtu.be/JcJ8me22NVs

SUBSCRIBE to our YouTube channel for more videos: http://www.youtube.com/skynews

Follow us on Twitter: https://twitter.com/skynews and https://twitter.com/skynewsbreak

Like us on Facebook: https://www.facebook.com/skynews

For more content go to http://news.sky.com and download our apps:

iPad https://itunes.apple.com/gb/app/Sky-News-for-iPad/id422583124

iPhone https://itunes.apple.com/gb/app/sky-news/id316391924?mt=8

Android https://play.google.com/store/apps/details?id=com.bskyb.skynews.android&hl=en_GB