Under which year's modified policy did MoP&NG outline consolidated terms for CBM exploration and exploitation rights for CIL and subsidiaries?

MoP&NG issued a partial modification of CBM Policy, 1997 via notification dated 8 May 2018, providing consolidated terms for CBM exploration and exploitation by CIL and its subsidiaries from their coal-bearing leased areas (the mining lease for coal is deemed lease for CBM). (Source: AR 2024-25 Ch 4 section 1.6.)