BHP Billiton has received approval from the US competition regulator for its $US15.1 billion ($A14 billion) takeover of shale gas company Petrohawk Energy.The approval came as the world's biggest miner formally launched the bid with the US Securities and Exchange Commission on Monday.
							26/07/2011 - 08:43
						
					BHP gets US shale gas takeover approval
								26/07/2011 - 08:43
							
						
 
             
										 
             
             
            