The transient EM technique ? Newmont's system in Australia

Abstract

Newmont Proprietary Ltd. has been operating a transient EM system in Australia since August 1976, and has surveyed more than 100 line km, in that time. In Australia the system has successfully located massive sulphides at depths in excess of 120 m, and in Canada orientation surveys indicate that mine size targets can be detected at depths approaching 300 m. The experience gathered to date strongly suggests that detection of mine size targets at depths in excess of 200 m, is possible even in areas of conductive over burden.