AppointmentTop Stories Dr. A.S. Senthi Vadivel promoted to DDG grade, GSI By LO Bureau - October 12, 2019 0 Share FacebookTwitterWhatsAppLinkedinEmailTelegram Dr. A.S. Senthi Vadivel, Director (Personnel & Administration) in the Geological Survey of India (GSI) has been promoted to the grade of Deputy Director General (Personnel & Administration), GSI.