Primacord

Detonating cord, also known as Primacord, is a type of explosive fuse that contains a high explosive core, such as PETN or RDX, instead of black powder. Developed in France in 1908 and later refined as Primacord in the United States in 1936, it resembles safety fuse but delivers a much faster detonation velocity, approximately 6,400 meters per second.1

Primacord is widely used in blasting operations to connect multiple explosive charges in various patterns. It is initiated by a blasting cap, which can be either fuse-type or electric. This allows for precise control over the timing of explosions, with delay connectors enabling sequential firing. A blasting cap itself is a device that initiates a high explosive charge using a shock wave, often produced by a primer ignited by heat, friction, or mechanical shock.12