Oil and Natural Gas Corporation (ONGC), Sutluj Jal Vidyut Nigam (SJVNL), Rail Vikas Nigam Limited (RVNL), National Highways and Infrastructure Development Corporation Limited (NHIDCL), and Tehri Hydro Development Corporation Limited (THDCL) -are engaged in to rescue operation for the trapped labourers at Silkyara tunnel in Uttarkashi,
The Sutlej Jal Vidyut Nigam Limited (SJVNL) will do vertical drilling to rescue the labourers for which equipment have been mobilised from Gujarat and Odisha through Indian Railways.
