Mining magnate Gina Rinehart named world's richest woman
24 May 2012 Last updated at 13:46 BST
An Australian mining magnate has been declared the richest woman in the world.
Gina Rinehart is now said to be worth 29 billion Australian dollars ($28bn; £18bn), having increased her wealth by nearly A$20bn in the past year.
Nevertheless, Ms Rinehart remains a controversial figure in Australia having been involved in some bitter public disputes.
Duncan Kennedy reports.