"Investigators: Massey Energy Falsified Safety Record At Upper Big Branch Mine"
“Mine owner Massey Energy kept two sets of records that chronicled safety problems” at the Upper Big Branch mine, which exploded and killed dozens of miners in April 2010, NPR reports. “One internal set of production reports detailed those problems and how they delayed coal production. But the other records, which are reviewed by federal mine safety inspectors and required by federal law, failed to mention the same safety hazards. Some of the hazards that were not disclosed are identical to those believed to have contributed to the explosion.”