Sydney: Western Australian mining tycoon Gina Rinehart is now the richest woman in the world after her wealth touched a mind blowing $29.17 billion in the past year.
BRW has named Rinehart, who is the chairperson of Hancock Prospecting, at the top of its 2012 Rich List, which was announced on May 22, and also revealed that she is the wealthiest woman on the planet.





