In really rare cases, discharge may cause an underground explosion of real equivalent several hundred kilograms of TNT, when during the travel underground meets with unexploded, even if considerably dilapidated and considerably staggered, several hundred kilogram bomb from World War II. (craters in the fields).
Katika kesi nadra kweli, kutokwa inaweza kusababisha mlipuko chini ya ardhi ya halisi kilo sawa mia kadhaa ya TNT, Wakati Wakati kusafiri chini ya ardhi hukutana na unexploded, hata kama makubwa na makubwa dilapidated kutangatanga, mia kadhaa kutoka kilo bomu World War II. (Kreta katika mashamba).