Strip ratio issue was dealt with - see company announcement "Clarifying Statement" 28 Oct.
Environmental liabilities are no different I think to any other miner.
And there's good news from China, too, as reported by WSJ:
China Announces a Massive 20% Increase in Coal – by 2020
the National Energy Administration said it would raise coal-fired power capacity from around 900 gigawatts last year to as high as 1,100 gigawatts by 2020
https://wattsupwiththat.com/2016/11/07/china-announces-a-massive-20-increase-in-coal-by-2020/
[WSJ is pay-walled, so I've given a report that quotes it and links to it]
(20min delay)