tunnels

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Detecting tunnels using seismic waves not as simple as it sounds

December 6, 2012 • ALBUQUERQUE, N.M. — You’d think it would be easy to use seismic waves to find tunnels dug by smugglers of drugs, weapons or people.You’d be wrong.Nedra Bonal of Sandia’s geophysics and atmospheric sciences organization is nearing the end of a two-year study, “Impro…