Behemoths BHP Group BHP.AX, Rio Tinto RIO.AX and Fortescue Metals FMG.AX fell between 1.8% and 2.5%. By Upasana Singh Sept 14 (Reuters) - Australian shares recorded their worst session since mid-June on Wednesday after red-hot U.S. inflation data fuelled bets for aggressive interest rate hikes by the Federal Reserve, while investors waited for Australia's jobless rate later in the week. Asian stocks also slumped after the inflation reading triggered a selloff on Wall Street on Tuesday.