
%0 Journal Article
%A Asten, M.W. 
%T Drillhole EM ? a strictly scientific Hokey-Pokey
%J Exploration Geophysics
%D 1996/09/01
%V 27
%N 3
%P 41-49
%K 
%R https://doi.org/10.1071/EG996041
%U https://www.publish.csiro.au/paper/EG996041 
%X Examples of drillhole EM (DHEM) from the Eloise copper-gold ore deposit, Queensland, show how EM methods can contribute to exploration and resource evaluation drilling programmes, by determining existence and extent of conductive mineralisation above and below a drillhole, along strike and off-section. Multiple conductors respond with differing transmitter coupling and time-constants, and can be identified by the use of multiple transmitter loops; an extreme example shows how four separate conductors can be identified in one drillhole with the use of five transmitter loops. 
