Sure, there's already a myriad of methods
and safely clearing out buried landmines, but the current options certainly aren't easy on the wallet. Thanks to a recent investigation by Georgia Tech
, however, commercially available microphones could actually be used "as near-ground sensors
for seismic detection of buried landmines," and if effective, could replace the rather pricey radar-based alternatives most commonly used. Recent trials using microphone data in an experimental model were said to "clearly locate buried inert landmines but exhibit more clutter than images formed with seismic displacement data collected using other techniques," but the excess noise may be worth the trouble if the cost savings prove significant.
, image courtesy of BBC