(18)"detonator" means a tubular device-(a)one end of which is closed and the other-(i)left open for the insertion of safety fuse for the purpose of initiating explosion within the tube; or(ii)fitted with wires or other device for that purpose and sealed;(b)which is loaded with a charge of initiating explosives, the charge being so designed as to produce an explosion that would communicate to the other tube similarly constructed and charged or other explosive charge and includes cord relay connector;
