Obama killed coal but the coal county voters did not turn out. For Trump to win on those issues he needs big time rural and exurb turnout. There are tons of decent people out there who simply don't vote.
I live in a rural area. I haven’t run into any support for Hillary yet in the county and that includes Democrats. The county rolls are about 6 to 1, Democrat to Republican. Other areas of WV had support for Sanders. There is a palpable anger. I think the turnout for Trump in the primaries when it exceeded previous numbers will be seen in the general too.
There is a silent majority and they’re pissed.