Detonator. Any device containing a detonating charge used to initiate an explosive. These devices include electronic detonators, electric or nonelectric instantaneous or delay blasting caps, and delay connectors. The term detonator does not include detonating cord. Detonators may be either Class A detonators or Class C detonators, as classified by the Department of Transportation in 49 CFR 173.53 and 173.100, which is available at any MSHA Metal and Nonmetal Safety and Health district office.
30 CFR § 56.6000
The following definitions apply in this subpart.