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Lignite deposits of Bikaner–Nagaur basin, lie in Jayal block of Nagaur district of Rajasthan. The sandstone, shale, claystone and lignite sequence repeats at regular intervals. The lignite mines presently 30–40 meters deep below ground level filled up above lignite seams with the brine whenever interruption in dewatering occurs. The Tertiary formations hosting lignite deposits are mined by open cast...