Sound Generator Could Kill Humans at Ten Metres

This seems like a harmless tube. In fact, it was harmless: Israeli farmers used the first version to scare birds from crop fields. Then, somebody converted it into a crowd dispersion mechanism. And then, they discovered it could kill. The Thunder Generator uses mixture of liquefied petroleum, cooking gas, and air to create explosions, which in return generate shock waves capable of stunning people from 30 to 100 metres away. At that range, the weapon is absolutely harmless, making people run in panic when they feel the sonic blast hitting their bodies. However, at less than ten metres, the Thunder Generator could either cause permanent damage or kill any person