I will preface by saying from the outset that I am not suggesting that the mining of coal is good for the environment in any way, shape, or form.
However, I am categorically certain that it is necessary by virtue of how our civilisation has evolved and will continue to be relevant for decades to come in our global energy mix; like many crutches upon which people become reliant, kicking it out from under us will hurt more than it helps.
I am also strongly of the view that if mined and used responsibly, the effects of coal on our environment can be managed. Further, with continued investment and focus on efficiencies and technology like carbon capture and storage (CCS) in heavy use environments, it can be materially reduced while we all work toward balancing our energy creation sources.