Abstract: A method for 3-D block modelling of a resource boundary in a post-blast muckpile to optimize destination delineation for resource control is provided. An in-situ pre-blast model of an ore deposit to be mined, movement data, blast design and explosive loading information, and post-blast topographic data are input in to the memory of a general purpose computer. Using the pre-blast block model, movement data, blast design and explosive loading information, and post-blast topographic data a three-dimensional vector field is generated. The method uses the three-dimensional vector field to move a plurality of centroids of the in-situ block model to populate a three-dimensional post-blast location. Then method optimizes the populated three dimensional post-blast location to determine a plurality of sets of optimal dig boundaries.

Abstract: A method for 3-D block modelling of a resource boundary in a post-blast muckpile to optimize destination delineation for resource control is provided. An in-situ pre-blast model of an ore deposit to be mined, movement data, blast design and explosive loading information, and post-blast topographic data are input in to the memory of a general purpose computer. Using the pre-blast block model, movement data, blast design and explosive loading information, and post-blast topographic data a three-dimensional vector field is generated. The method uses the three-dimensional vector field to move a plurality of centroids of the in-situ block model to populate a three-dimensional post-blast location. Then method optimizes the populated three dimensional post-blast location to determine a plurality of sets of optimal dig boundaries.

Abstract: A current generator device includes a processing unit including an input module designed to acquire input data representing a desired current wave. The processing unit also includes a management and control module connected to the input module and designed for receiving the input data and generating a primary voltage wave. The processing unit also includes an output module connected to the management and control module and designed to receive the primary voltage wave and to process it so as to generate an output current wave. The management and control module are further designed for receiving the output current wave from the output module and comparing the output current wave with the desired current wave and, if they are not substantially equal, modifying the primary voltage wave so as to obtain a new output current wave substantially equal to the desired current wave.

Abstract: Current generator device comprising a processing unit (2) comprising: —an input module (6) designed to acquire input data representing a desired current wave; —a management and control module (8) connected to the input module (6) and designed for: receiving the input data; generating a primary voltage wave; —an output module (12) connected to the management and control module (8) and designed to receive the primary voltage wave and to process it so as to generate an output current wave. The management and control module (8) is further designed for: receiving the output current wave from the output module (12); comparing the output current wave with the desired current wave and, if they are not substantially equal, modifying the primary voltage wave so as to obtain a new output current wave substantially equal to the desired current wave.

Abstract: A method for measuring the movement of boundaries between different portions of a heterogeneous rock body is disclosed. The method comprises placing a plurality of blast movement monitors 109 in a rock body prior to blasting and noting the position of each blast movement monitor. The rock body is then blasted to break it up into a plurality of pieces. Thereafter the position of the blast movement monitors 109 is located and based on this the boundaries of rock portions can be adjusted to account for the blast. This leads to a more accurate reporting of different ore bodies to the appropriate processor in a heterogeneous rock body. An apparatus for carrying out the method is also disclosed. The apparatus comprises broadly a said monitor 109 and a receiver. The monitor 1 comprises a transmitter 109 received within a casing 111 that in turn is received within a housing 126. Further the casing 111 can move within the housing 126 and self right so that it always transmits its signal in an upright direction.

Abstract: A method for measuring the movement of boundaries between different portions of a heterogeneous rock body is disclosed. The method comprises placing a plurality of blast movement monitors 109 in a rock body prior to blasting and noting the position of each blast movement monitor. The rock body is then blasted to break it up into a plurality of pieces. Thereafter the position of the blast movement monitors 109 is located and based on this the boundaries of rock portions can be adjusted to account for the blast. This leads to a more accurate reporting of different ore bodies to the appropriate processor in a heterogeneous rock body. An apparatus for carrying out the method is also disclosed. The apparatus comprises broadly a said monitor 109 and a receiver. The monitor 1 comprises a transmitter 109 received within a casing 111 that in turn is received within a housing 126. Further the casing 111 can move within the housing 126 and self right so that it always transmits its signal in an upright direction.