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Caves a Cornerstone of U.S. Security Effort

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Caves a Cornerstone of U.S. Security Effort

Caves a Cornerstone of U.S. Security Effort

Caves a Cornerstone of U.S. Security Effort

  • Download
  • <iframe src="https://www.npr.org/player/embed/1138708/138708" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">

U.S. government investigators are working overtime screening potential federal employees at what could be the most unique office space in America: deep inside a Pennsylvania mountain, in the caverns of an abandoned mine. For All Things Considered, NPR's Pam Fessler gets a rare glimpse inside Iron Mountain..

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