Shares in the Anglo-Australian mining major climbed after reports it might demerge unwanted assets for up to $19bn. Lex's Oliver Ralph and Joseph Cotterill discuss the history of the assets, and their value.<br /><br />For more video content from the Financial Times, visit http://www.FT.com/video<br /><br />Subscribe to the Financial Times on YouTube; http://goo.gl/vUQx5k<br />Twitter https://twitter.com/ftvideo<br />Facebook https://www.facebook.com/financialtimes
