Major miners .AXMM took a dip in the price of iron ore in their stride, with BHP BHP.AX rising as much as 1.4% and Rio Tinto gaining 1.2%. By Riya Sharma April 29 (Reuters) - Australian shares closed at their highest level in nearly 14 months on Thursday, extending gains from the previous session when mild inflation data pushed the benchmark index to snap its two-day losing streak. Supermarket giant Woolworths WOW.AX fell 3.9% following a quarterly result well below analysts' expectations, while rival Coles COL.AX disproportionately benefited from this and rallied 3.4%.