Australia's richest person Gina Rinehart has eclipsed Wal-Mart heiress Christy Walton to become the world's wealthiest woman, according to an annual index by Business Review Weekly.
A preview of the respected BRW Rich 200 list, published Wednesday, put the mining tycoon's personal fortune at Aus$29.17 billion (US$28.48 billion), a figure that sees her outstrip Walton for the first time.
Australian tycoon 'is world's richest woman'
