It looks like Glencore has the right idea, food for thought.
"Glencore said in February that it would slash its Australian coal production by 15 per cent, or 15 million tonnes, this year to avoid selling tonnes at a discount into an oversupplied market. It appears to be on track to make good".
http://www.smh.com.au/business/mini...od-on-slower-coal-output-20150527-ghaj8y.html