Abstract: A system (10) for loading a flowable explosive into blast holes includes a mobile explosives supply unit (12) having at least one explosives feed line for feeding a flowable explosive from the supply unit (12) into a blast hole, a global positioning system (GPS) unit (14) operable to determine the position of a blast hole, and a blast hole identification processor (16) in communication with the GPS unit (14) operable to receive from the GPS unit (14) a blast hole co-ordinate position. The processor (16) is configured or programmed uniquely to identify the blast hole based on the co-ordinate position of the blast hole.

Abstract: A system (10) for loading a flowable explosive into blast holes includes a mobile explosives supply unit (12) having at least one explosives feed line for feeding a flowable explosive from the supply unit (12) into a blast hole, a global positioning system (GPS) unit (14) operable to determine the position of a blast hole, and a blast hole identification processor (16) in communication with the GPS unit (14) operable to receive from the GPS unit (14) a blast hole co-ordinate position. The processor (16) is configured or programmed uniquely to identify the blast hole based on the co-ordinate position of the blast hole.

Abstract: A device for crimping the mouth of a detonator housing comprises a pair of opposed jaws reciprocally movable relative to each other, and a plurality of toothed segments on each jaw. The segments are moveable, are located in a jaw cavity, and together form a segmented ring. The side faces of each segment converge from a broad radially outer end towards a toothed radially inner narrow end. A resiliently stressable biasing element is provided between each adjacent pair of segments. The biasing elements act to space the segments of each pair apart when the jaws are spaced apart from each other, and also act to permit the segments, in response to movement of the moveable segments arising from the closing of the jaws, to abut against one another in series when the jaws are tightly in contact with each another, to form the segmented ring.