The production of state-run Coal India declined by 63 per cent on the first day of a three-day strike by its workers affiliated to five trade unions, according to a company official.
The overburden removal, or clearing of topsoil to make coal seams ready for mining, was 57.84 per cent on Thursday, the official said.
Coal India produced 4,81,000 tonnes of coal on Thursday, which is 37 per cent of the last 10 days average production (from June 22 to July 1) of 12,96,900 tonnes, the official said.
Protesting trade unions, however, had claimed that on the first day of

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