(I) When searching for land mines, it is exceedingly difficult to distinguish them from the tin cans, spent cartridges, and other metallic debris that litter a war zone. (II) Fewer than one per cent of all signals from de-miners' metal detectors actually indicate land mines. (III) Indeed, civilians have frequently been victims of land mines. (IV) Moreover, the technology used in the field has barely advanced since World War II. (V) Therefore, the clearing process is laborious and inefficient, as well as dangerous.