Lynn Estel Stanley was the kind of coal mine foreman who wanted to know if there was a safety problem, and would always be the one to go fix it himself. He was also the kind of miner who refused to slow down, even when his men told him he was overexerting himself. But when he was 69, his doctor told him it was time to stop for good.
Stanley wasn’t surprised. He knew he was getting sick. “It kept getting progressively worse and harder to breathe to the point where I just couldn’t do my job, I didn’t have enough oxygen,” he said.