Mine Safety In America NPR NEWS INVESTIGATION: Coverage of mine safety in the U.S. after an explosion at Massey Energy's Upper Big Branch Mine in West Virginia killed 29 workers.

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. Jacquelyn Martin/AP hide caption

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Jacquelyn Martin/AP

Former CEO Indicted For Alleged Role In Deadly Mine Disaster

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Mine helmets and painted crosses at the entrance to Massey Energy's Upper Big Branch coal mine, as a memorial to the 29 miners killed there. Jeff Gentner/AP hide caption

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Jeff Gentner/AP

Coal miners are tested for black lung. Recently, the deadly disease has been discovered in younger miners and at more advanced stages. David Deal for NPR hide caption

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David Deal for NPR

Black-Lung Rule Loopholes Leave Miners Vulnerable

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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 hide caption

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Jewel Samad /AFP/Getty Images

Massey Mine Boss Charged In Deadly Coal Mine Explosion

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Mine Disaster Report Signals Safety Agency Failure

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Internal Probe, Criminal Charges Still Pending In W.Va. Mine Disaster

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