Deminers spend much of their time locating and exposing scrap metal fragments. Statistics from Afghanistan show that 1000 sqm are cleared for every mine or UXO removed., where the average rate of metal fragments per unit area is one metal fragment per 3 sqm. (The range of metal framgents per area is 30 items per sqm to one fragment per 500 sqm - for approximately 500 minefields in soft ground conditions). [Modelling Minefield Clearance Performance, technical report available on request]. A magnet could remove ferrous/magnetic fragments before demining commences, reducing the time needed for manual demining.
In response to a request...
I went to my wife's work and saw this for sale on the reception desk, apparently on behalf of one of the children of a coworker. The charity in question is the BIMBO Daycare. I can only assume that the...