Coalgate: Naveen Patnaik defends his writing to PM on Hindalco's plea
India | Oct 18, 2013, 06:52 AM ISTBhubaneswar: Odisha Chief Minister Naveen Patnaik on Thursday defended his writing to Prime Minister Manmohan Singh to 'examine expeditiously' the plea of Aditya Birla Group company Hindcalco for allotment of a coal block in the