Blast Training International

The kg of explosives loaded divided by the cubic metres or tonnes of rock broken.

An explosive, sensitive to spark, flame, impact or friction, used in a detonator to initiate the explosion.

A substance or mixture of substances which will burn without relying on oxygen from external sources to sustain the reaction. Used as detonator delay train compounds.

A term used to describe the re-entry of water back into a blast hole after it has been dewatered.

Highly directional stem / material ejection from a firing blasthole.

Noise / air blast caused by the displacement of a large amount of air as the face rock mass swells and is thrown out.

Noise / air blast caused by the venting of high pressure blast gases through the face.

A line of blast holes parallel to a face.

Relative effectiveness factor or R.E. factor is a measurement of an explosive's power for military demolitions purposes. It is used to compare an explosive's effectiveness relative to TNT by weight only, TNT equivalent/kg (TNTe/kg). This enables engineers to substitute one explosive for another when they are calculating blasting equations that are designed for TNT. For example, if a timber cutting charge requires 1 kg of TNT to work, it would take 0.42 kg of ONC, 0.6 kg of PETN, 1.25 kg of ANFO, or 2.22 kg of AN to have the same effect.

Generic term referring to variation of delay timing no statistical definition.