42 companies including Adani Enterprises Ltd, Hindalco Industries Ltd. JMS Mining Pvt. Ltd., Andhra Pradesh Mineral Development Corp. Ltd, EMIL Mines and Minerals Resources Ltd, Vedanta Ltd and Jindal Power Ltd have bid for 23 coal mines put on auction for commercial mining, according to a government official. A total of 38 coal mines were put for auction, out of which 76 bids were received for 23 coal mines. The auction was organised by the coal ministry on 18 June, with the technical bids opened on Wednesday.