Four workers suffered injuries, two of them seriously, when the roof of a mine partially collapsed at Putki Balihari area in Dhanbad district today.
The mine falls under Bharat Coking Coal Limited (BCCL), a subsidiary of Coal India Limited.
A senior district official said the four contractual workers were taking cable to a shaft of the hydro mines in lift when a part of the roof suddenly caved in trapping them.
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The two seriously injured were now under treatment at Central Hospital, Dhanbad while the other two were being treated at a local hospital in the neighbourhood of the mines and were out of danger, the official added.
The cause of the collapse was being looked into, the official said.
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