PERTH, AUSTRALIA - JUNE 09: (FILE PHOTO) Gina Rinehart, chairman of Hancock Prospecting joins protesters as they rally against the government's proposed mining tax outside the Hyatt Regency Hotel where Prime Minister Kevin Rudd is to address the Perth Press Club on June 9, 2010 in Perth, Australia. Gina Rinehart, Australia's richest woman, with a net worth of US$20.4 billion has lost a last-ditch effort to reopen a suppression order hearing today, after it was thrown out by the NSW Supreme Court. Rinehart is trustee of a multi-billion dollar trust following the death of Lang Hancock, and her children have taken action in the NSW Supreme Court to have her removed from the trust. Rinehart has attempted to suppress details of the case, taking it to the HighCourt. (Photo by Paul Kane/Getty Images)