CaberDownload printable version

Canada

Borehole InfiniTEMŽ detects a conductor as small as Caber at a radius of more than 475 metres. The use of InfiniTEMŽ can reduce drilling costs by spacing the stratigraphic drill holes up to 800 metres apart, instead of 400 m.

The Caber deposit (0.43 Mt @ 11.7 % Zn, 0.7 % Cu) is located in the Matagami mining camp. A conventional borehole EM survey and borehole InfiniTEM® surveys were tested at 200 metres and 475 m from the deposit.


At 200 metres from the deposit (Hole NCB-99-56), conventional BHEM reaches its detection limit. The anomaly is too weak for reliable data interpretation.


On the other hand, the borehole InfiniTEM® anomaly is outstanding, at least 20 times greater amplitude than that of a conventional BHEM survey. Furthermore, the migrating cross-over indicates that the borehole intersected the conductor at an oblique angle.


At 475 metres from the deposit (Hole NCB-99-74), the conventional borehole EM survey does not show any anomaly.


InfiniTEM® proves its greater radius of investigation by clearly mapping the deposit from a hole that is 475 m from the deposit.