Jess Bishop, a black lung victim, takes his last breaths while his sons — also coal miners — keep vigil in Logan County, W.Va., in 1976. The disease spiked in the 1960s and ’70s but then plummeted with the passage of mine safety laws.

Jess Bishop, a black lung victim, takes his last breaths while his sons — also coal miners — keep vigil in Logan County, W.Va., in 1976. The disease spiked in the 1960s and ’70s but then plummeted with the passage of mine safety l