Operations Inside Rio Tinto Group's Oyu Tolgoi Copper And Gold Mine

Employees walk past Komatsu Ltd. dump trucks parked outside an open pit at the Oyu Tolgoi copper-gold mine, jointly owned by Rio Tinto Group's Turquoise Hill Resources Ltd. unit and state-owned Erdenes Oyu Tolgoi LLC, in Khanbogd, the South Gobi desert, Mongolia, on Tuesday, June 17, 2014. Mongolia's Vice Minister for Mining Erdenebulgan Oyun said mining law amendments would increase Mongolia's area available to mining and exploration to 20 percent from around 8 percent, by lifting a 2010 ban on new licenses. The period of exploration would also increase from nine years to 12 years. Photographer: Brent Lewin/Bloomberg via Getty Images