The National Institute for Occupational Safety and Health sent a mobile testing unit to a fire station in Wharton, W.Va., in 2012 to screen coal miners for black lung disease.
Branham wears reflective mining pants in his home in Elkhorn City, Ky. Branham has advanced stage black lung and was forced to quit mining earlier this year.
Benny Becker/Ohio Valley ReSource
Don Blankenship, former CEO of Massey Energy, is accused of thwarting mine safety enforcement and conspiring to violate mine safety law. Massey Energy owned the Upper Big Branch mine in West Virginia, which exploded in 2010, killing 29.
At an April 25, 2010, service in Beckley, W. Va., for the 29 miners killed in the Upper Big Branch explosion, helmets — placed on crosses — were lined up in their honor.
Jewel Samad /AFP/Getty Images