[xlevus]

iirc, The British did this in India but with snakes.

It wasn't long until the locals just farmed snakes to sell to the British.

Plus, retrieving landmines would be a pointlessly dangerous task, when all you really need to do is blow them up when nobody is around.

[sgdesign]

http://en.wikipedia.org/wiki/Cobra_effect

[Tipzntrix]

I hope they wouldn't start making land mines to farm.