Bhopal: Aditya Birla Group's firm, Essel Mining, has won the bid for the country's biggest diamond exploration and mining unit worth Rs 55, 000 crore, 'Bunder Mines' in Chhatarpur district of Madhya Pradesh, defeating the Adani Group in the last lap. Five companies, Essel Mining of the Birla Group, Chendipada Kolari of Adani Group, …Web