Explanation:

 The Mangala, Bhagyam and Aishwariya (MBA), among others, constitute Cairn, Oil & Gas vertical of Vedanta Limited’s key fields in Rajasthan. These are the three largest finds in Rajasthan. The Mangala field — considered to be the largest onshore hydrocarbon finds in India in more than two decades — was discovered in January 2004. This was followed by discoveries of the Aishwariya and Bhagyam fields. Till date 38 discoveries have been made in the Rajasthan block. Studies indicate that the block has further potential for growth.