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Caves a Cornerstone of U.S. Security Effort

Published February 25, 2002 at 10:00 PM MST

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..

Copyright 2002 NPR