Except when the Taliban were in government (back 6 years ago or so) they banned opium production and caused a worldwide heroin drought.

http://www.google.com.au/search?q=taliban+ban+opium

Afghan opium production didn't restart until after the Taliban were ejected from office.

Rudd doesn't appear to have banned coal mining as far as I can tell.

Rudd doesn't appear to have banned coal mining as far as I can tell.

See, Rudd can learn from the Taliban. The ban drove up the price of opium several fold. Imagine what a ban on Aussie coal exports could do to the price of coal?