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Blindspot said:Would rats be heavy enough to detonate a mine, even while digging?
The methods currently used in mine clearance have drawbacks.
Metal detectors are very slow and tedious because they pick up every single metal fragment in a suspected minefield.
"The de-miner has to approach every little piece of garbage with the same caution that he has to approach a landmine, so you can imagine where that leaves you," Weetjens said.
Of the 26,000 pieces of metal detected so far on the minefield in Vilanculos, only 74 turned out to be landmines.
After World War Two dogs emerged as the most reliable detection method, able to sniff out even those mines buried 15 to 20 cm below ground, which a metal detector will miss.
The pouched rat combines a dog's nose without its bulk.
Growing to a maximum weight of 2.8 kilograms it can scamper around a minefield without the risk of detonating anti-personnel gadgets that can be triggered by its heavier canine colleague.
The rats are attached to little red harnesses and guided down the length of a 100-square-metre field by their trainer. When the rat hits on a suspected mine, it stops, sniffs and starts to scratch.
Source:
African rat sniffs out Mozambique landmines: http://www.abc.net.au/news/newsitems/200501/s1282859.htm
Sniffer rats to find African mines http://news.bbc.co.uk/2/hi/africa/3123119.stm
Why using rats?: http://www.apopo.org/whyrats/

