Topic summary
Secondary explosives
Extracted from the Wikipedia article Explosive.
High
High explosives can be divided into two explosive classes differentiated by sensitivity: primary explosives and secondary explosives. Although tertiary explosives (such as ANFO at 3.2 km/s (Mach 9.4; 2.0 mi/s) can technically meet the explosive velocity definition, they are not considered high explosives in regulatory contexts.