The government wants the tax on iron ore and coal mine profits, due to start in July 2012,MBT scarpe, to raise about A$7.7 billion in its first two years, and Treasurer Wayne Swan said the changes meant the biggest miners would pay the most.

"Most of this money will now be paid by the largest miners in this country,MBT calzature," Swan told parliament.

A government deal with two other independents,MBT, Tony Windsor and Rob Oakeshott, earmarks A$200 million over five years for scientific research into coal seam gas projects, to allow governments to better assess the impact on water and farming.