Mangala oil field in Barmer, Rajasthan, has begun production of oil five-and-a-half years after discovering it in 2004. "It is a proud moment for us," said Rahul Dhir, ceo, Cairn India, announcing the news. "By 2011, we would be contributing about 20 per cent of India's domestic crude production. Not just that, the profit petroleum revenue to the government of India would be $9.5 billion (around Rs46,000 crore) over the life of the pro