The pushback comes after it was reported that three major insurance groups charged Adani for policies covering work at Carmichael since November.

Mining accounts for nearly 6% of its gross domestic product.

China's steel association has called for an increase in domestic iron ore production as well as greater investment in exploration overseas to ensure supplies.

Miners account for almost 20% of recorded covid-19 cases in the country.

Replacing 500 gigawatts of high-cost coal plants with solar and wind farms would reduce carbon emissions by about 1.8 gigatons, equivalent to 5% of CO2 emissions in 2019.