Blasting Cap 4 : A small, thin-walled, cylindrical case containing a sensitive explosive such as lead azide used to detonate other less sensitive explosives. See also: Detonator, Primer
Ralph W. Burklin & Robert G. Purington, Fire Terms: A Guide to Their Meaning and Use, National Protection Association, Boston, MA 1980 USA. (Guide: Meaning and Use, Nat Prot Association Fr Srvc - Amer) {457}