The present invention relates to a method for producing ANFO on the basis of filtration and purification of the residual oils of a mine in a filter truck especially designed and developed for this purpose, with the aim of completely replacing the diesel fuel 2 with said residual oils that have been previously treated in order to mix same with ammonium nitrate, as well as the product resulting from said method. The aim of this invention is to use the residual oil produced in mines in large quantities, as the only combustible agent in the production of ANFO, generating cost savings by completely substituting diesel 2 and additionally eliminating the existing risk inherent in the removal of the residual oil from the mine and the negative impact that it can generate in the environment if it is not used appropriately.

A charge tube for use with a perforating tool that includes a tubular member having a first end, a second end, an outer surface, and a passage extending between the first end and the second end, and a receptacle extending through the outer surface of the tubular member for receiving a shaped charge, wherein the tubular member includes a reduced diameter section, and a first expanded diameter section disposed at the first end of the tubular member, the first expanded diameter section having a greater diameter than the reduced diameter section, and wherein the reduced diameter section and the first expanded diameter section of the tubular member are monolithically formed.

Exemplary apparatus, systems, and methods to provide an ability to quickly and securely hand emplace stand-off demolition charges to various surfaces or structures including surfaces including any flat surface. An aspect of the embodiment of the invention is a lightweight attachment bracket that will hold charges at distances up to (e.g., ten inches) away from a vertical target. The bracket is collapsible, therefore provides a user adjustable stand-off, which is necessary for some applications. Attachment to ferrous material can be instant through a set of rare earth metals imbedded in the base of the bracket. A skirt of high strength textile material provides attachment to other surfaces via integrated hooks and rings. Alternative embodiments of the invention could include an electromagnetic system provided to couple the bracket with a battery in order to provide a limited amount of power to operate the system.

A wellbore perforation gun includes a gun housing, a plurality of charges, a first reactive material, and a second reactive material that is reactive with the first reactive material to generate an endothermic chemical reaction to drop the potential energy (in the form of temperature or pressure) of the gun housing. The perforation gun may further include a controller and a release capsule, with the first reactive material being disposed within the release capsule and the second reactive material being disposed within a chamber of the gun housing at a first time. The controller may be communicatively coupled to the release capsule and operable to generate a signal to the release capsule at a second time that is later than the first time. The release capsule may be operable to release the first reactive material into the chamber response to receiving the signal.

A wellbore perforation gun includes a gun housing, a plurality of charges, a first reactive material, and a second reactive material that is reactive with the first reactive material to generate an endothermic chemical reaction to drop the potential energy (in the form of temperature or pressure) of the gun housing. The perforation gun may further include a controller and a release capsule, with the first reactive material being disposed within the release capsule and the second reactive material being disposed within a chamber of the gun housing at a first time. The controller may be communicatively coupled to the release capsule and operable to generate a signal to the release capsule at a second time that is later than the first time. The release capsule may be operable to release the first reactive material into the chamber response to receiving the signal.

An avalanche triggering apparatus having a tower, a detonation chamber, and gas supply lines that are configured to deliver fuel gas and oxidizer to the detonation chamber. The flow is gas is controlled remotely, and a spark plug is configured to ignite gases within the detonation chamber based on the flow of fuel gas through a flow switch that acts as a sensor. The detonation chamber has a closed, rounded top and an open bottom end that is configured to face a snow surface. The detonation chamber is connected to the tower via mounting brackets and two pairs of isolator springs. Each isolator spring is comprised of a helical cable isolator that is inserted through a plurality of holes in two aluminum members in a helical configuration. The tower is comprised of at least two sections that are secured together via flanges.

An avalanche triggering apparatus having a tower, a detonation chamber, and gas supply lines that are configured to deliver fuel gas and oxidizer to the detonation chamber. The flow is gas is controlled remotely, and a spark plug is configured to ignite gases within the detonation chamber based on the flow of fuel gas through a flow switch that acts as a sensor. The detonation chamber has a closed, rounded top and an open bottom end that is configured to face a snow surface. The detonation chamber is connected to the tower via mounting brackets and two pairs of isolator springs. Each isolator spring is comprised of a helical cable isolator that is inserted through a plurality of holes in two aluminum members in a helical configuration. The tower is comprised of at least two sections that are secured together via flanges.

Liners (150), fittings (11-22), and spacers (23-25) are provided to assemble the jet (170) units, which work as explosives (110) and detonators (120) to form stand-off distance and air-deck (140) space. The liners (150) release jets (170) and the fittings (11-22) and spacers (23-25) are designed to attach the liner (150) firmly to the explosives (110), inducing the cavity effect. The objective of the present invention is to provide a blasting method using a jet (170) unit to overcome the limits of sympathetic detonation, applying a mechanism that is ideal according to the analysis of observations in blast-hole (100) blasting. The application of jet (170) units for jet (170) detonation in blast-hole (100) blasting overcomes the performance limits of explosives (110) manufacturing and the conceptual limits of detonators (120) functionalities and improves the channel effect, dead pressing, loss of power, and stopping of detonation etc. Particularly, the application of controlled blasting and air-decking can be carried out without restriction while maintaining the safety of the slurry or emulsion explosives (110).

The present disclosure relates to a robotic priming device for an explosive priming process. One aspect includes at least one initiator dispenser, each comprising a plurality of initiator racks containing a plurality of initiators. Each initiator dispenser includes one or more initiator discharge wheels that discharge the initiators onto an initiator cart. The device includes at least one detonating assembly dispenser, each comprising a plurality of detonating assembly racks containing a plurality of detonating assemblies. Each detonating assembly dispenser comprises one or more detonating assembly unloading wheels that unload the detonating assemblies onto a detonating assembly cart. The device includes a meeting and priming line with a meeting and priming zone. The detonating assembly cart locates the detonating assemblies in the meeting and priming zone. The initiator cart moves the initiators to the meeting and priming zone, and inserts the initiators into the detonating assembly to form an explosive primer.