Abstract: A non-electric detonator connected to similar detonators with capsule 2 with having charge 8 and delay train 9. A tube 3 for transmitting a shock wave having an internal surface with a predetermined amount of a propagating explosive has one end mounted within capsule 2 adjacent to delay train 9. A seal 12 formed by collapsing a portion of tube 3 at a distance from its end prevents a shock wave accidentally created at capsule 2 from propagating to the rest of tube 3. Yet, the propagation of the wave is not prevented when it comes from the other end of tube 3. The distance from end 13a where seal 12 is formed needs to be selected for a predetermined explosive amount not sufficient to propagate the wave from capsule 2 but enough to propagate it when the wave comes from the other end.

Abstract: A non-electric detonator connected to similar detonators with capsule 2 with having charge 8 and delay train 9. A tube 3 for transmitting a shock wave having an internal surface with a predetermined amount of a propagating explosive has one end mounted within capsule 2 adjacent to delay train 9. A seal 12 formed by collapsing a portion of tube 3 at a distance from its end prevents a shock wave accidentally created at capsule 2 from propagating to the rest of tube 3. Yet, the propagation of the wave is not prevented when it comes from the other end of tube 3. The distance from end 13a where seal 12 is formed needs to be selected for a predetermined explosive amount not sufficient to propagate the wave from capsule 2 but enough to propagate it when the wave comes from the other end.

Abstract: An electrical delay detonator for use in blasting initiation systems energized by a non-electric impulse signal transmitted through a non-electrical conduit, such as a shock tube, with one end inserted inside a detonator housing having redundant sensors for detecting the presence of a non-electric impulse signal and a computerized control circuit for actuating the firing circuit. An elevated voltage is generated, stored in a capacitor assembly, and discharged when fired to an electrically operable igniter. The igniter, when activated, detonates an explosive mass. A battery is also contained within the detonator housing for powering the control circuit and one sensor, in low consumption mode, for several days. Upon detecting the presence of a signal the rest of the circuits are powered up. Periodic time windows generated by the control assembly provide corresponding enabled time periods for the sensors to become operational.

Abstract: An explosive emulsion to be used in conjunction with a gas-producing agent, such as sodium nitrite, to form an explosive emulsion with a density between 0.50 g/cm3 and 0.90 g/cm3. The present invention also includes the method for producing the explosive emulsion. The explosive emulsion is stable for at least 96 hours with nitrogen bubbles, having a predetermined dimension range, homogenously distributed. To maintain this low-density explosive emulsion stable, between 84% and 95% by weight of an oxidizing solution is combined with 5% to 16% by weight of a fuel solution. The fuel solution includes solid cacao fat as a stabilizing agent and stearic acid to prevent the combination of the nitrogen bubbles. The method for producing the oxidizing solution includes combining ammonium nitrate, sodium nitrate, thiourea, urea, and water at a temperature between 80 and 90 degrees centigrade. In another step of the method, a fuel solution is produced by combining an emulsifier, oil, diesel No.

Abstract: An electrical delay detonator for use in blasting initiation systems energized by a non-electric impulse signal transmitted through a non-electrical conduit, such as a shock tube, with one end inserted inside a detonator housing having redundant sensors for detecting the presence of a non-electric impulse signal and a computerized control circuit for actuating the firing circuit. An elevated voltage is generated, stored in a capacitor assembly, and discharged when fired to an electrically operable igniter. The igniter, when activated, detonates an explosive mass. A battery is also contained within the detonator housing for powering the control circuit and one sensor, in low consumption mode, for several days. Upon detecting the presence of a signal the rest of the circuits are powered up. Periodic time windows generated by the control assembly provide corresponding enabled time periods for the sensors to become operational.

Abstract: An explosive emulsion to be used in conjunction with a gas-producing agent, such as sodium nitrite, to form an explosive emulsion with a density between 0.50 g/cm3 and 0.90 g/cm3. The present invention also includes the method for producing the explosive emulsion. The explosive emulsion is stable for at least 96 hours with nitrogen bubbles, having a predetermined dimension range, homogenously distributed. To maintain this low-density explosive emulsion stable, between 84% and 95% by weight of an oxidizing solution is combined with 5% to 16% by weight of a fuel solution. The fuel solution includes solid cacao fat as a stabilizing agent and stearic acid to prevent the combination of the nitrogen bubbles. The method for producing the oxidizing solution includes combining ammonium nitrate, sodium nitrate, thiourea, urea, and water at a temperature between 80 and 90 degrees centigrade. In another step of the method, a fuel solution is produced by combining an emulsifier, oil, diesel No.