@ Ganesh
http://www.apopo.org/bringing_minefi...o_the_rats.php
Nothing against you personally, but this method is ridiculous! Because rats are no explosive-sniffing dogs!
Bring those rats to the minefield and you will find nothing - you will loose them, by running away or even by "explosion".
@ Ernie
Your mom also told you shouldn't play with your d*ck - so just forget it

, but DON'T make fun out of this topic!
Read this:
http://www.geotech1.com/forums/showthread.php?t=16588
where Geo found a "Bouncing Betty" (for luck inactive already)! Demining and treasure hunting sometimes is nearly the same and you really should be as careful as possible.
Walking with a dowsing-rod into a mine-field is the same crazy as like walking with a bikini into the radioactiv zone of an atomar-reactor!