COILABLE ELONGATE BLASTING CARTRIDGE

摘要

Coilable elongate explosives charge or blasting cartridge (1) comprises elongate semi rigid plastics tube (2) having end closures (4, 7), detonating cord (5) extending longitudinally within tube (2) between opposite ends, and an explosive composition occupying all but a small portion of tube (2) at the proximal end. Free end (8) can be folded to form a stem plug when inserting charge (1) into a borehole. Distal end (3) of tube (2) can also be formed with an enlarged diameter region to provide, in use, a region of increased explosive energy adjacent the butt of a borehole.