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A high density emulsion blasting agent and method is provided for increasing volume energy and optimizing booster sensitivity of water-in-oil emulsion blasting agents without loss of desirable handling characteristics of invert emulsions by utilizing an effective amount of a special sensitizing form

A high density emulsion blasting agent and method is provided for increasing volume energy and optimizing booster sensitivity of water-in-oil emulsion blasting agents without loss of desirable handling characteristics of invert emulsions by utilizing an effective amount of a special sensitizing formulation in total or partial substitution for gas entraining density control agents.

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1. A high density emulsion blasting composition comprising (A) an invert water-in-oil emulsion having a continuous hydrophobic organic phase comprising an emulsifier, a hydrocarbon or carbonaceous fuel component, and a discontinuous aqueous phase comprising at least one soluble inorganic oxidizer

1. A high density emulsion blasting composition comprising (A) an invert water-in-oil emulsion having a continuous hydrophobic organic phase comprising an emulsifier, a hydrocarbon or carbonaceous fuel component, and a discontinuous aqueous phase comprising at least one soluble inorganic oxidizer salt; (B) an effective amount of a sensitizing formulation comprising (a) about 4-80% by weight of formulation of a polynitrate ester of a 2-5 carbon polyhydric alcohol, (b) about 0.5%-8% by weight of nitrocellulose, (c) about 10-60% by weight of ammonium nitrate, (d) up to 20% by weight of particulate carbonaceous solids, (e) up to 45% by weight of sodium chloride, (f) up to 74% by weight of sodium nitrate; and (C) up to about 20% by composition volume of a density control agent. 2. The emulsion blasting agent of claim 1 wherein the density of the emulsion blasting composition is greater than about 1.30 gm/ml. 3. The composition of claim 2 wherein the soluble inorganic oxidizer salt comprises ammonium nitrate alone or in combination with at least one member selected from the group consisting of sodium nitrate, sodium chlorate, sodium perchlorate, calcium nitrate, calcium chlorate, calcium perchlorate, potassium nitrate, potassium chlorate, potassium perchlorate, ammonium nitrate, ammonium chlorate, ammonium perchlorate, lithium nitrate, lithium chlorate, lithium perchlorate, magnesium nitrate, magnesium chlorate, aluminum chlorate, barium nitrate, barium chlorate, barium perchlorate, zinc nitrate, zinc chlorate and zinc perchlorate. 4. The blasting composition of claim 1 wherein the sensitizing formulation is present in the amount of about 10-30 weight percent based on blasting composition. 5. The blasting composition of claim 2 wherein the polynitrate ester component of the sensitizing formulation is at least one member selected from the group consisting of trimethylolethane trinitrate, nitroglycol, diethylene glycol dinitrate, and nitroglycerin. 6. The blasting composition of claim 1 containing at least one additional component selected from the group consisting of talc, borax, glycerin, sulfur, dinitrotoluene, trinitrotoluene, calcium carbonate and zinc oxide. 7. The composition of claim 3 wherein a combination of emulsifiers is utilized. 8. The composition of claim 1 wherein the sensitizing formulation contains at least one gelation accelerator component. 9. A method for optimizing volume energy and sensitivity of a high density invert emulsion blasting composition comprising adding an effective amount of the sensitizing formulation defined in claim 1. 10. A method for optimizing volume energy and retaining sensitivity of a high density invert emulsion blasting composition comprising adding an effective amount of a sensitizing formulation defined in claim 2. 11. A method for optimizing volume energy and retaining sensitivity of a high density invert emulsion blasting composition comprising adding an effective amount of a sensitizing formulation defined in claim 3. 12. A method for optimizing volume energy and retaining sensitivity of a high density invert emulsion blasting composition comprising adding an effective amount of a sensitizing formulation defined in claim 4. 13. A method for optimizing volume energy and retaining sensitivity of a high density invert emulsion blasting composition comprising adding an effective amount of a sensitizing formulation defined in claim 5. 14. A method for optimizing volume energy and retaining sensitivity of a high density invert emulsion blasting composition comprising adding an effective amount of a sensitizing formulation defined in claim 6. 15. A method for optimizing volume energy and retaining sensitivity of a high density invert emulsion blasting composition comprising adding an effective amount of a sensitizing formulation defined in claim 7. 16. A method for optimizing volume energy and retaining sensitivity of a high density invert emulsion blasting composition comprising adding an effective amount of a sensitizing formulation defined in claim 8.