| Webster's Online Dictionary |
| Expressions | Domain | Definition | |
| Delay electric blasting cap | Mining | An electric blasting cap with a delay element between the priming and detonating composition to permit firing of explosive charges in sequence with but one application of the electric current. It detonates about 1 to 2 s after the electric current has passed through the bridge. It is made in two kinds, first and second delay, and is used in connection with regular, waterproof, or submarine electric blasting caps for blasting in tunnels, shafts, etc., where it is desirable to have charges fired in succession without the necessity of the blaster returning between shots. (references) | |
| Electric blasting cap | Mining | A. A device for detonating charges of explosives electrically. It consists essentially of a blasting cap, into the charge of which a fine platinum wire is stretched across two protruding copper wires, the whole fastened in place by a crimp or plug. The heating of the platinum wire bridge by the electric current ignites the explosive charge in the cap, which in turn detonates the high explosive.b. Detonator fired electrically. See also: electric detonator. (references) | |
| Waterproof electric blasting cap | Mining | A cap specially insulated to ensure reliability of firing when used in wet work. Syn: blasting cap. (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||
