2001 DAS GUPTA, Somnath (b. 1951) PhD,FNA,FASc,FTWAS, Visiting Professor, Department of Earth Sciences, Indian Institute of Science Education & Research-Kolkata, PO Mohanpur – 741246; Res. Block 4, Flat 3B, 78, Raja S.C. Mullick Road, Kolkata – 700084; Tel: (033) 24238057(R), 09831167145(M); Email: ; Sp. Metamorphic Petrology/Ore Geology.