Report claims that Walter Energy, Patriot Coal, Alpha Natural Resources, Arch Coal and Peabody Energy also allocated more than half a billion dollars for top executives salaries in decade before going bankrupt.
It will raise its annual exploration spending by 29%, allocating nearly all its $900 million budget to finding new copper and oil deposits in the fiscal year beginning next month.
Belarus has said it might cooperate with Uralkali, in the first sign the two sides might work together since the Russian potash producer broke off their business alliance in 2013.