Detnet South Africa (pty) Limited

Detnet South Africa Ltd

Phillip Olwage

Johannes Petrus Kruger

Andre Crichton

A downline wire () serves to connect a location on the ground surface to at least one detonator () in a blast hole. The downline wire includes at least two flexible electrical conductors () encased by respective flexible layers of an insulating material () and a flexible sheath () in which the insulated conductors are embedded. Each conductor () is made of a copper-clad steel core and the insulating material is either a filled flexible polyvinylchloride (PVC) composition or a polyester elastomer. The sheath () is made from a medium or high density polyethylene compound which includes carbon black.

Downline wire

A spool for use in a blasting system which includes a coiled signal transmitting conductor connected at one end to a detonator and at a second end to a connector, wherein the detonator and the connector are engaged with retentive formations on a face of a flange of the spool.

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Sandton, South Africa

Phillip Olwage