Added to all this is uncertainty on impact of mine-degradation. The company has seen grade slippages impacting overall profitability. During March quarter its operating profit fell by 39.2 percent year-on-year to Rs 3,388 crore primarily attributable to higher provisioning towards pending wage revision and for grade slippage. Analysts at Kotak Institutional Equities say that the de-grading of several coal mines since April 2017 poses new uncertainty; it is yet unclear how much this compounds the impact of grade slippages already factored in and uncertainty on this issue will likely subside only post results for June'17 quarter. Coal India management in recent analyst meets however believes that with quality control measures in place, grade slippages should not happen and management expects better grades of existing mines moving forward.

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