Stop promising them jobs? What are they supposed to do, move because you think they should? If you don't have answers, then stop acting like you know what the problem is.
Have you ever been to these areas? If you have, then you know these people are not leaving. They love it there, they like living there. All they want are jobs and a way to support their families. The best jobs and the best way they have been able to do that is mining. Until someone actually cares and starts truly investing and creating other ways for them to do that, that's what they want, mining jobs.
You seem to think this area is full of inbred, uneducated hillbillies that spend their days setting on the front porch playing banjos and spitting tobacco.
They have running water, They have electricity. They have degrees and and are highly skilled in a lot of trades.
Welders, electricians, teachers, nurses, pharmacists, etc. Stop stereotyping an area and a people because you are not educated about the area or the issues.