Is the battle finally over between the Aditya Birla Group and the Hindustan Petroleum Corporation (HPCL)? For months the two sides have been warring over the Rs 3,000 crore Mangalore Refinery and Petrochemicals Ltd (MRPL), which is a joint venture between the two. Now, the state-owned Rs 47,000 crore HPCL has finally agreed to give management control in the country