MIT engineer Baba Kalyani controls Bharat Forge, one of the world's largest makers of auto forgings and flagship of his $2.5 billion (revenues) Kalyani Group. In an ongoing expansion of its non-auto forgings business, which today contributes 40% to revenues, it has started producing components for Indian Railways and the oil and gas industry. He plans to convert a 4,500-acre special economic zone near Pune into an industrial enclave. His wealth is up mainly due to new information on landholdings.