Abstract: The present invention is directed to an improved connector comprising a first and second holding means for pressure fitting a detonating cord and shock tube in a substantially orthogonal pressure fitting relationship.

Abstract: A field adjustable delay connector for use in detonating cord hook-ups for multi-charge blasting particularly adapted to work effectively with low energy shock or detonating cord. The delay connector is so constructed that the donor cord initiates combustion in a variable length of burning composition the length being mechanically adjustable by the blaster during hook-up.

Abstract: A modified explosive shock tube is provided which has a lateral energy output and hence may be used as a trunk line in a non-electric blasting network. The modified shock tube comprises a hollow, flexible plastic tube having a layer of energy-producing material on its inner surface and also having at intervals along its length, cuts or slits which penetrate the tube wall. The area of the slits has an overcovering of a waterproof material. When energized, the tube will burst at the area of the slits to release energy in a direction lateral to the tube axis.