Freeport-McMoRan Copper & Gold Inc...suspended operations at the world’s second-largest copper mine, where five people were killed and 23 remain trapped after a tunnel collapse at the Grasberg complex in Indonesia. Mining remained halted for the second day amid rescue and recovery efforts and in sympathy for the victims of the accident, PT Freeport Indonesia [part of Freeport-McMoran] said...Before the latest stoppage, output at Grasberg was disrupted in 2011 and 2012 after labor unrest and violence. The company said in a February filing that 15 people died and 57 were injured in 37 shooting incidents in and around the complex between July 2009 and Feb. 15 this year.