Detnet South Africa (pty) Limited

Detnet South Africa Ltd

Marinus Yates

Michiel Jacobus Kruger

Craig Charles Schlenter

Brian E Petted

Daniel August Julien Louis Maurissens

In a blasting system a method of determining which borehole in a plurality of boreholes at a blast site is closest to a tagger, wherein latitude and longitude coordinate values for each borehole are determined and by using subsets of the longitude coordinates and latitude coordinates, and by performing a haversine calculation the position of the borehole which is closest to the tagger is determined.

Detonator position determination

A blasting system which includes a number of roving GPS receivers, and associated taggers, which communicate with one another and with a control mechanism, and a reference GPS receiver which transmits RTCM corrective positional data which is stored at each roving GPS receiver to improve the accuracy of coordinate determinations for boreholes.

Growing community of inventors

Benoni, South Africa

Marinus Yates