Copper electric detonators comprise copper shells filled with PETN and ASA as base and primary charge respectively. These shells are crimped with a pair of PVC coated wires soldered to fuse heads. The two lead wires are passed through PVC plugs of required length and diameter to protect from moisture and water. The other end of the wire is shorted to the detonator to protect against any straystatic current.
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Vikrampuri, Secunderabad, Telangana