Subir Raha today took over as the chairman and managing director of the Oil and Natural Gas Corporation (ONGC).
The post had fallen vacant following the superannuation of B C Bora on April 30.
Subir Raha, who was director (human resources) of Indian oil Corporation, was inducted as a director of Oil and Natural Gas Corporation in October 2000 when there was an equity swap between Indian oil Corporation and ONGC.