Cairn Oil & Gas, a unit of Vedanta Ltd, on Friday said it has commenced test production from its Hazarigaon field in Assam that it had won in a discovered small field (DSF) bid round. “The gas produced by Cairn Oil & Gas is evacuated through a main trunk pipeline, and a gas cascading system to AGCL,” the firm said in a statement. “The gas evacuation from the field will be used by tea growers among other industries.”