Checkpoint Washington: National Security Archive


Posted at 11:39 AM ET, 03/26/2012

U.S. concern about underground bunkers goes back decades, declassified documents show
By Joby Warrick
Declassified documents published online highlight 60 years of intense U.S. interest in the science of detecting and destroying deeply buried targets.

By Joby Warrick  |  11:39 AM ET, 03/26/2012 |  Permalink  |  Comments ( 0)
Tags:  National Security Archive, nuclear weapojns, national security