Extinction of coal

As proven in Australia, with the write down of coal properties, it is clear that the time of coal as a resource has now past. That is the economical argument, and if one were to add the environmental considerations of mining sites there is no room for coal in the energy realm.And to confirm the "dirtiness"of coal one only has to look at those companies who have left a legacy of degradation and disregard for the environment at existing sites.Economical,environmental and changing times,3strikes and "YOUR OUT!"