Replacement of unserviceable silica gel with breather of different transformer at different places under Jarangdih Colliery. Replacement of unserviceable silica gel with breather of different transformer at different places under Jarangdih Colliery.

Replacement of unserviceable silica gel with breather of different transformer at different places under Jarangdih Colliery. Replacement of unserviceable silica gel with breather of different transformer at different places under Jarangdih Colliery.