A: by Dr. M.K. Devarajan
Exploration for deep mineral deposits is carried by indirect methods such as geophysical methods (deep IP, magneto-telluric, seismic etc) and by deep drilling. Before the advent of geophysics mineral deposits were delineated on the basis of geological, structural and geo-chemical aspects.
A: by Sri Pramod Kumar, AMD
Geological modelling, concept based ideas and lessons learnt from other places.. . Geophysics now is the third eye n very helpful in exploration.
A: by Sri Om Prakash Somani, MSPL
Normally it is very difficult to assess the depth in the absence of any geophysical model or drilling, but one can draw inference of the depth if any nearby mine exists in the similar geological set up.