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Old 04-23-2013, 07:42 PM
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Schone23666 Schone23666 is offline
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Location: Virginia Beach, Virginia
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Quote:
Originally Posted by Webstral View Post
Does anybody know how you find tunnels the owners don't want found? I know ground penetrating radar has come a fair distance since the US started trying to use it against the Vietnamese Communists, but I have no idea what the state of the art is. Can you use sonic technology?
I found an interesting link here in regards to that. It seems in regards to the tunnel problems underneath the 38th Parallel DMZ, narcotics shipping tunnels underneath the U.S. southern border, and the various tunnels and caves used by insurgents in places such as Afghanistan, the U.S. has been continuing plenty of research on this.

http://www.agu.org/meetings/sm06/sm0...m06_NS21A.html

The Text is pretty small though, fair warning. May need to copy-paste and use a larger text size to read it.
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