They will also need to acquire land outside of the National Park...

They will also need to acquire land outside of the National Park to deposit the overburden which will be millions of tonnes.
Not saying it won't happen but I don't give it much of a chance...maybe 30% at best. The greenies will find an endangered frog of fungi and then you can forget any open cast mine.

I think the mine is more likely to be sold on to a company that can resurrect the underground. Apparently there has been some interest from an Australian coal mining company..(just a rumour)

I could be quite wrong.

cheers