Mining giant BHP Billiton's half-year net profit has dived by 47.4 per cent to $US4.3 billion ($A5.52 billion) after a period of plummeting iron ore prices.
Mining giant BHP Billiton's half-year net profit has dived by 47.4 per cent to $US4.3 billion ($A5.52 billion) after a period of plummeting iron ore prices.