Explosives are recongnised a dangerous matter and brought in connection with destruction and with war and terrorism. A big bang is the acoustic sign of it, indicating, that failure of construction or killing is occuring. Unfortunately we hear about such events every day.下he only positive effect is that destruction in a positive manner can be performed in mining operations where drill holes are filled with explosive in order to crush rocks or coal下here are quite a number of constructive applications of explosives下hey make use of special features of explosions.