Dhanbad, Oct 22 (UNI) Sunil Kumar, a 1991-batch alumnus of Indian School of Mines (ISM), Dhanbad, has been appointed chairman of Oil and Natural Gas Corporation (ONGC), with the Appointments Committee of the Cabinet approving his appointment, according to an official order. Kumar, currently executive director and asset manager of ONGC's Mehsana Asset, will assume charge on or after Dec 7, 2026, for a combined tenure of three years or until further orders, whichever is earlier, the order dated October 21, 2026, said. He will continue until his superannuation on December 31, 2028, and thereafter serve on a contractual basis,…