Rinehart lends support on Fairfax ad ban FAIRFAX Media's largest shareholder, Gina Rinehart's Hancock Prospecting, has supported the company's decision to refuse an ad campaign for the book Killing Fairfax even as the company overturned that decision. "We would have no issue with Hywood (Fairfax chief executive Greg Hywood) stopping the promotion of that book in Fairfax newspapers if he deemed it was not in the commercial interests of Fairfax," Hancock chief development officer John Klepec said.