Jan du Plessis, chairman of Rio Tinto Group, center, pauses during a speech as Samuel 'Sam' Walsh, outgoing chief executive officer, left, and Tim Paine, joint secretary, right, listen during the company's annual general meeting in Brisbane, Australia, on Thursday, May 5, 2016. Rio Tinto Group, the second-largest mining company, reaffirmed its goal to raise annual iron ore output in Australia to 360 million metric tons amid forecast growth demand in Asia. Photographer: Patrick Hamilton/Bloomberg via Getty Images