In Whitehaven in the north-west of England, the issue is intensely debated
The region is struggling with high unemployment and many residents want the mine.
They believe that it would be better than importing coking coal from other countries.
We have met Claire Kellett, who would have to move with her family if the mine is built, but who still thinks it's a good idea.
-How heartbreaking it is, we love our house, we think so.
We need the jobs, and it is more environmentally friendly to have the mine here, she says.
See interview with Claire Kellett in the player above.