Still less sensitive materials such as blasting agents like ANFO, or shell fillings like Composition B, are so insensitive that the impulse from the detonator must be amplified by an explosive booster charge to secure reliable detonation.
12.
Discovered in 1894, PETN first found use as a blasting agent in 1930, and it was a main explosive in World War II . The material is not especially difficult for anyone familiar with chemical synthesis to make.
13.
Methylammonium nitrate, also known as PR-M ( which stands for " Potomac River Mono-methylamine nitrate " ) soon was seen as the possible path toward creating a low-cost blasting agent ( water gel explosives ) that might replace the explosives based on nitroglycerin ( dynamites ).
