| Patent Number |
Title Of Patent |
Date Issued |
| 7240618 |
Explosive device with accelerated bioremediation capacity |
July 10, 2007 |
| Technology for in situ remediation of undetonated explosive material. An explosive apparatus contains an explosive material in close proximity with a carrier containing microorganisms and with nutrient for the microorganisms. An explosive mixture capable of self remediation includes |
| 7188566 |
Non-electric detonator |
March 13, 2007 |
| A detonator (10) has a constant-diameter shell (12) which has a significantly higher shell length-to-diameter (outside diameter) ratio than prior art detonators. The shell (12) is configured to hold an explosive output charge (18) which is cylindrical in configuration and has a charg |
| 7077044 |
Method for bioremediating undetonated explosive device |
July 18, 2006 |
| Technology for in situ remediation of undetonated explosive device. An explosive device contains an explosive material in close proximity with microorganisms capable of metabolizing the explosive material that are either mobile or temporarily deactivated by freeze drying. Examples in |
| 6982015 |
Reduced energy blasting agent and method |
January 3, 2006 |
| The present invention relates to a method of reducing the energy of an emulsion blasting agent as it is being loaded into a borehole and to an improved method of perimeter blasting wherein an energy reducing agent is added to and mixed uniformly throughout an emulsion blasting agent as i |
| 6880465 |
Accumulated detonating cord explosive charge and method of making and of use of the same |
April 19, 2005 |
| An initiator (14c) for a secondary explosive receptor charge is provided by forming a length of detonating cord (14) into a helical coil containing a plurality of windings with a cut-off barrier provided by, e.g., a separating rib (46) between adjacent windings. The adjacent windings may |
| 6808573 |
Emulsion phase having improved stability |
October 26, 2004 |
| A method is disclosed for forming a stable, water-in-oil emulsion phase containing a polymeric emulsifier. The addition of an animal oil or fatty acid additive enhances the long-term stability of the emulsion phase following homogenization. |
| 6761781 |
High density ANFO |
July 13, 2004 |
| The present invention relates to a high density ammonium nitrate-fuel oil ("ANFO") blasting composition comprising an organic liquid fuel and porous prilled ammonium nitrate of high bulk density, small particle size and good oil absorption capacity. |
| 6702909 |
High energy explosive containing cast particles |
March 9, 2004 |
| The present invention relates to a water-based explosive having detonation properties similar to dynamite. It comprises an emulsion explosive formed by blending an emulsion phase with cast particles. The emulsion phase comprises a continuous organic liquid fuel phase, a discontinuous |
| 6539870 |
Blasting method for reducing nitrogen oxide fumes |
April 1, 2003 |
| The present invention is directed to an improved method of blasting whereby the formation of nitrogen oxide after-blast fumes is reduced. This helps satisfy the need for better fume characteristics in blasting. The method reduces the formation of nitrogen oxides in after-blast fumes resu |
| 6401588 |
Delivery of emulsion explosive compositions through an oversized diaphragm pump |
June 11, 2002 |
| A system and method are provided for delivering emulsion explosive compositions into a borehole by means of an oversized diaphragm pump, which provides a relatively constant flow rate for the pumped emulsion explosive composition thereby minimizing flow pulsations during delivery. |
| 6220838 |
Progressive cavity pump with meltable stator |
April 24, 2001 |
| The invention comprises a progressive cavity pump for pumping a flowable explosive composition or other heat-sensitive material comprising an inlet and an outlet; a stator that is meltable at or above a selected maximum pump operation temperature; a rotor, and a drive shaft connecting th |
| 6113715 |
Method for forming an emulsion explosive composition |
September 5, 2000 |
| The invention relates to methods for forming an emulsion explosive composition and to methods for sensitizing an emulsion explosive composition. The methods involve the in-situ expansion of organic microspheres during the formation of the emulsion explosive composition. |
| 6022428 |
Gassed emulsion explosive |
February 8, 2000 |
| The invention comprises an emulsion explosive composition having an organic fuel as a continuous phase; an inorganic oxidizer salt solution or melt as a discontinuous phase; an emulsifier; and gas bubbles formed from a chemical gassing agent that comprises a nitrite salt and an ion selec |
| 5907119 |
Method of preventing afterblast sulfide dust explosions |
May 25, 1999 |
| The invention comprises a method of preventing afterblast sulfide dust explosions in blasting operations involving sulfide-containing ores, which method comprises (a) loading a borehole that has been drilled into a sulfide-containing ore body with an emulsion blasting agent that comprise |
| 5880399 |
Cast explosive composition with microballoons |
March 9, 1999 |
| The invention comprises a cap-sensitive, cast, solid explosive composition usable as a booster or primer and as a seismic explosive composition. The cast, solid explosive composition contains dispersed microballoons which impart important and surprising advantages. |
| 5686685 |
System for pneumatic delivery of emulsion explosives |
November 11, 1997 |
| Apparatus for delivery under pressure of emulsion explosives to boreholes using an annular stream of water for lubrication. Maintaining the water pressure at least 10 psi greater than the emulsion pressure has been found to maintain the integrity of the lubricating annulus of water. |
| 5670741 |
Method of preparing a cast solid explosive product |
September 23, 1997 |
| A solid explosive composition is made by curing a mixture of a 20-50% by weight of a liquid matrix, 50-80% by weight of an essentially anhydrous inorganic chlorate or perchlorate salt, and 0-15% of a nitrate salt after transferring said mixture to a mold. The matrix can include 50-84% by |
| 5665935 |
Cast primer and small diameter explosive composition |
September 9, 1997 |
| A solid explosive composition is made by curing a mixture of a 20-50% by weight of a liquid matrix, 50-80% by weight of an essentially anhydrous inorganic chlorate or perchlorate salt, and 0-15% of a nitrate salt after transferring said mixture to a mold. The matrix can include 50-84% by |
| 5608185 |
Method of reducing nitrogen oxide fumes in blasting |
March 4, 1997 |
| This invention relates to a method of reducing the formation of toxic nitrogen oxides in after-blast fumes by using an emulsion blasting agent that has an appreciable amount of urea in its discontinuous oxidizer salt phase. |
| 5490887 |
Low density watergel explosive composition |
February 13, 1996 |
| The present invention comprises a watergel explosive composition, and method of manufacturing the same, that has a density of less than 0.8 g/cc. The composition has good water resistance and is especially useful in blasting applications calling for lower energy explosives. |
| 5460073 |
Method and apparatus for feeding hoses into mining boreholes and the like |
October 24, 1995 |
| A method and apparatus are described for feeding a hose having a corrugated exterior surface into a mining borehole and the like. The apparatus includes a support frame and a rotatable drive wheel having an annular groove for receiving the hose and ridges extending therefrom for meshing |
| 5454891 |
Co-nitration of trimethylolethane and triethylene glycol |
October 3, 1995 |
| Disclosed is a process for preparing an energetic mixture of trimethylolethane trinitrate and triethylene glycol dinitrate by forming a polyol mixture of trimethylolethane, triethylene glycol and water and then nitrating the polyol mixture with a mixture of nitric and sulfuric acids. |
| 5445059 |
Method for forming paper-wrapped emulsion explosive cartridges |
August 29, 1995 |
| The invention is a novel method for forming paper-wrapped cartridges of gassed emulsion explosive comprising the steps of (a) forming a water-in-oil emulsion at an elevated temperature, (b) chemically gassing the emulsion to form a sensitizing, uniform distribution of gas bubbles thr |
| 5423263 |
Detonator-to-shock tube ignition transfer connector |
June 13, 1995 |
| A detonator-to-shock tube ignition transfer connector for bi-directional explosive transfer from a detonator to one or more shock tubes is disclosed wherein the connector has a housing defining a barrel portion for enclosing a detonator assembly, the barrel portion having an opening |
