IRONORE/ Ramsay Health Care RHC.AX slid 10.4% after a KKR-led KKR.N consortium said it will not improve its $14.5 billion cash-and-stock offer for the hospital operator. By Upasana Singh Sept 13 (Reuters) - Australian shares ended at a more than two-week high on Tuesday, boosted by banks and miners, with investors awaiting U.S. inflation data for clues on the Federal Reserve's policy tightening stance. The U.S. Labor Department's consumer price index, due later in the day, is crucial to gauge the number and size of Fed's future interest rate hikes.