The apex court on March 31 named Spigelman as the third Arbitrator who shall act as the Chairman of the Arbitral Tribunal whose two other members are former Chief Justices of India -- S P Bharucha and V N Khare.
While Mukesh Ambani-led RIL has nominated former Justice Bharucha as its arbitrator, the Centre chose Justice Khare as its nominee.
The Supreme Court on Wednesday agreed to hear a plea seeking stay on arbitration proceedings on a dispute between Mukesh Ambani-led Reliance Industries Ltd (RIL) and the government over recovery of cost for developing the country's key natural gas field in the Krishna-Godavari (KG) basin.