An aerial view shows the site of the Grassberg Mine, operated by the U.S.-based Freeport-McMoran Copper & Gold in Indonesia's Papua province, in this file picture taken November 4, 2010. In January ... more 
An aerial view shows the site of the Grassberg Mine, operated by the U.S.-based Freeport-McMoran Copper & Gold in Indonesia's Papua province, in this file picture taken November 4, 2010. In January 2014, Indonesia introduced a mineral ore export ban and the escalating tax on metal concentrate shipments in a bid to force miners to process raw materials to lift their value. But the tough measures in some cases backfired as miners such as Freeport and Newmont Mining Corp said the rules breached their contracts and exports stopped. At a private meeting in Jakarta in early July, Tanjung and chairman of Freeport-McMoRan Inc James "Jim Bob" Moffett agreed to leave the most contentious issues over contract renegotiations to the next government and instead focus on getting exports restarted. To match Insight INDONESIA-MINING/ REUTERS/Muhammad Yamin/Files (INDONESIA - Tags: BUSINESS COMMODITIES ENVIRONMENT) less 
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Reuters | Photo By MUHAMMAD YAMIN / REUTERS
Sun, Aug 24, 2014 1:00 PM EDT