28 APRIL 2010AL CIRCLEAustralia May Become Highest-Tax Mining Nation, Citigroup Says <b>...</b>Edited by : AL CIRCLE1 min read... The possible introduction of a 40% resources tax may make Australia, the world's biggest exporter of iron ore, alumina and coal, ...Tagged with:MiningAustraliaPrevious articleNALCO issues 30000 tonnes alumina tenderNext articleIndonesia Market factors to watch - April 27 | ReutersGrow with AL CircleKNOW MORE