Robert Dennis has mined coal in West Virginia for 10 years but a recent evening found him in a classroom at his local community college. He came to learn about opportunities in fracking, a drilling technique used to produce natural gas — the very fuel that is threatening coal’s future. “I know mining inside and out,” said Dennis, a 41-year-old shift foreman from Wetzel County, adjusting the black Adidas cap on his head. But now, “I just want more doors to be open.”
