electronic gadgets like scanners,metal detectors is not suitable in locating yt,specally deep target. my late mentor already tried using different machines like gpr,resistivity meters,em sensors high end md like lorenz and pulstar 2 but all failed. i also tried using this in my site, em sensors and lorenz md. both had negative result. currently i'm using Japanese dowsing stick owned by our late mentor who had successfully retrieved yt using this gadget.