Donnie Coleman, chief safety director and a coal miner of almost 40 years, crawls through a coal mine roughly 40-inches-high, Tuesday, Oct. 6, 2015, in Welch, W.Va. Miners spend their shifts reclined in their mining machines, crouched and crawling through darkness and the thick, black muck made from coal dust and the water sprayed to keep the dust down. (AP Photo/David Goldman)