Orica International Pte Ltd

James Walter

John Cooper

Ian John Kirby

Vladimir Sujansky

Johann Zank

Mark Stuart Rayson

A method of producing an explosive composition comprising a liquid energetic material and sensitizing voids, the sensitizing voids being present in the liquid energetic material with a non-random distribution, which method comprises: providing a flow of liquid energetic material; and delivering sensitizing voids into the flow of liquid energetic material in a series of pulses to provide regions in the liquid energetic material in which sensitizing voids are sufficiently concentrated to render those regions detonable and regions in the liquid energetic material in which the sensitizing voids are not so concentrated.

Method of producing an explosive emulsion composition

A mobile manufacturing and delivery platform that is adapted to provide in a blasthole an explosive composition comprising a liquid energetic material and sensitizing voids, the sensitizing voids being present in the liquid energetic material with a non-random distribution. The platform comprises a storage tank for the liquid energetic material; at least two delivery lines for conveying respective streams of the liquid energetic material from the storage tank; a void delivery system for producing sensitizing voids in at least one of the streams of liquid energetic material; a mixer for mixing the streams of liquid energetic material to produce the explosive composition; and a blasthole loading hose. The mixer may be provided at the end of the loading hose. A blasting method employs the platform to manufacture and deliver the explosive composition into a blasthole, which composition is subsequently detonated.

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Cottesloe, Australia

James Walter