Abstract: The present invention relates to a primer composition formed of TNT, DNT (2,4-dinitrotoluene) and fine particle size PETN (pentaerythritol tetranitrate) for use with explosive charges. This composition is extruded in melt condition into primer cartridges. Any topping-off operations are eliminated since practically no shrinkage occurs as the melt cools to form a solid casting in the cartridge.

Abstract: A method for producing water gel explosives by stabilizing a dispersion of nitroparaffin, preferably nitromethane, in an aqueous oxidizer salt solution through the simultaneous in situ gelation of the nitromethane dispersed phase and the continuous external aqueous phase, and the product so produced.

Abstract: A method for producing water gel explosives by solubilizing a nitroparaffin sensitizer having 1-3 carbon atoms, preferably nitromethane, in an aqueous oxidizer perchlorate salt solution by incorporating in the composition a nitroparaffin solubilizing agent, such as ethylene glycol, and the product so produced.

Abstract: An adapter, for attachment to electric blasting circuit leads to an explosive charge, houses an electric blasting cap connected with the blasting circuit for severing the leads immediately after the blast is fired. The adapter comprises a tube which supports the cap and which has a slot cut into and through the tube wall adjacent the explosion end of the supported cap by which the tube is attached to the blasting circuit leads.

Abstract: A priming device for initiating explosive compositions. The device includes an elongated shell preferably formed of a synthetic plastic material which has a compartment closed off at one end for housing a sensitive explosive material which is more sensitive than the usual bulk explosive charges to be detonated. Also included in the primer unit is a passageway which is open at both ends of the shell for receiving and housing an electric blasting cap. This channel has an inwardly extending shoulder which reduces the inner diameter thereof but still permits the passage of a blasting cap therethrough. However when the cap and its leg wires are both laced through and lodged in the passageway the cap becomes wedged at the shoulder to hold it firmly in position within the device with the base charge end of the cap adjacent to the compartment containing the sensitive explosive material.