There's also the fact that there just aren't that many coal jobs to begin with. Here's one link, you can find lots more: www.washingtonpost.com/news/wonk/wp/2

There's also the fact that there just aren't that many coal jobs to begin with. Here's one link, you can find lots more: www.washingtonpost.com/news/wonk/wp/2017/03/31/8-surprisingly-small-industries-that-employ-more-people-than-coal/ Coal gets a lot of attention because it's visible, distinctive, and I think a lot of people see it as a stand-in for any blue-collar job, i.e. the stuff that's all being automated or obsoleted out of existence.