An improved water-in-oil emulsion explosive composition tor use boosters cartridged in plastic shells which comprises 70 to 90% by weight of an aqueous solution of inorganic oxidiser salts such as herein described, from 3 to 8% by weight of a fuel phase and from 3 to 7% by weight of one or more solid metallic fuels. ...

There is disclosed a method of manufacturing permitted detonators useful for mining, comprising the steps of: deep-drawing steel and electrogalvanizing the steel to produce shells of required lengths; coating outer surface of the shells so produced with a polymeric resin; filling the shells with a secondary explosive ...