IRONORE/ Sector giants BHP Group BHP.AX, Rio Tinto RIO.AX and Fortescue Metals FMG.AX traded in positive territory. The Fed left rates unchanged on Wednesday but maintained an overall hawkish stance, as the U.S. central bank reacted to a stronger-than-expected economy and a slower decline in inflation. In Sydney, miners .AXMM led the gains with a rise of 0.7% after iron ore prices closed higher overnight.