Wind Power Cheaper than Coal, page-26

There are a lot more subsidies being paid to mining than the fuel excise rate.

Figures released earlier this month by the Productivity Commission show the mining industry received $492 million in direct subsidies last year.
But senior economist with the Australia Institute, Matt Grudnoff, says if you include tax concessions provided to mining companies, the amount of subsidy is almost ten times that figure.

http://www.abc.net.au/news/2013-06-25/nrn-dist-mining-subsidies/4778042