Water in oil type emulsion explosive

A water in oil type emulsion explosive, wherein the amount of the carbonaceous fuel is 1-10 wt %, the amount of the inorganic oxidate consisting essentially of ammonium nitrate is 36-95 wt %, the amount of the emulsifier is 0.1-7 wt %, and the amount of the foam retainer is such that can adjust the apparent specific density of the emulsion explosive to 0.8-1.35.

A water in oil type emulsion explosive containing a continuous phase of a carbonaceous fuel, a dispersive phase of an aqueous solution of an inorganic oxidate, an emulsifier, and a foam retainer, wherein the carbonaceous fuel is composed of 5 wt % or more of a low molecular weight polyethylene of 20-80 carbon atoms not having a polar group at its terminal end, and having a melting point or softening point of 40.degree.-120.degree. C., a number average molecular weight of 350-1,000, and a density of 0.90-0.96 cc/g, and 95 wt % or less of at least one or two waxes selected from the group consisting of mineral, animal, vegetable, petroleum and synthetic waxes of a melting point of 40.degree. C. or more and containing 10 wt % or more of isoparaffin.