Investigations Read the latest from NPR's investigative team. If you have solid tips or documents on stories we should probe, please send them to us.

Sgt. Derrick Junge was diagnosed with a concussion, but passed over for a Purple Heart. Junge has not received rehabilitation or treatment for ongoing medical difficulties, and he struggles with simple tasks. NPR/Frontline hide caption

toggle caption
NPR/Frontline

Purple Hearts Elusive For Traumatic Brain Injuries

  • Download
  • <iframe src="https://www.npr.org/player/embed/129606127/129742884" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Massey Execs' Access To Mine After Blast Questioned

  • Download
  • <iframe src="https://www.npr.org/player/embed/129609425/129609405" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Mine Disaster Answers Still Months Away

  • Download
  • <iframe src="https://www.npr.org/player/embed/129135354/129135334" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Methane Monitors Recovered In Mine Blast Probe

  • Download
  • <iframe src="https://www.npr.org/player/embed/128991850/128994490" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Don L. Blankenship, chairman and chief executive officer of Massey Energy Company (left), watches as protesters disrupt a luncheon at the National Press Club, where he spoke on Thursday. Wayne Huang/NPR hide caption

toggle caption
Wayne Huang/NPR

Mine ventilation issues are critical to running a safe coal mine. Here, a rescuer walks through a blocked tunnel in the Crandall Canyon Mine, northwest of Huntington, Utah, where six coal miners were trapped in 2007. Rick Browmer/AP hide caption

toggle caption
Rick Browmer/AP

Mine Citations Focus on Ventilation, Fire, Electricity

  • Download
  • <iframe src="https://www.npr.org/player/embed/128665256/128674366" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Methane monitors are mounted on 30-foot-long continuous miners like this one, and other mining machines, to warn coal miners about dangerous levels of explosive methane gas. File photo hide caption

toggle caption
File photo

Massey Miners: Disabling Monitors Was Common

  • Download
  • <iframe src="https://www.npr.org/player/embed/128555903/128556692" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript