Blasting Elements Initiator
P- Electric detonator 1- Match stick
Q- Safety fuse 2- Booster
R- Detonating fuse 3- Exploder
S- Non cap-sensitive explosive 4- Ordinary detonator
- P-2, Q-3, R-4, S-1
- P-3, Q-1, R-4, S-2
- P-3, Q-1, R-2, S-4
- P-1, Q-4, R-2, S-3