Patent ID: 9658045
Date: 2017-05-23
CPC Classifications: F42D

Claim:
1. A method of controlling operation of a blasting system which includes a plurality of detonators ( 12 ) which are loaded into respective boreholes ( 18 ) and a control device ( 20 ) for initiating the detonators ( 12 ), the method including the steps of measuring the position of each detonator ( 12 ), measuring the position of the control device ( 20 ), from these measurements, in respect of each detonator ( 12 ), calculating the distance between the control device ( 20 ) and the detonator ( 12 ), comparing the calculated distance to a minimum distance requirement and of allowing the control device ( 20 ) to initiate the detonators ( 12 ) only if the respective calculated distance between each detonator ( 12 ) and the control device ( 20 ) exceeds a minimum distance requirement.