New Delhi, May 27 (PTI) State-owned Coal India, Oil India, NLC India and Vedanta group firm Hindustan Zinc are among the firms that have bagged critical and strategic mineral blocks under the fifth round of auction. While Coal India Ltd (CIL) has bagged a graphite and vanadium block in Chhattisgarh, Oil India Ltd emerged as a preferred bidder for potash and halite mine in Rajasth... https://www.theweek.in/wire-updates/business/2025/05/27/dcm118-biz-criticalmineral-auction.html