Detonator 04 : A capsule or case which contains such a quantity of an explosive of the fifth (fulminate) class that the explosion of one capsule or case will communicate itself to other like capsules or cases
Ministry of Business, Innovation and Employment, Glossary of terms and acronyms, Wellington, New Zealand 2010. http://wwwsosh.govt.nz/resources/glossary-u.shtml, (Occupn Hlth and Sfty - Brit) {530}