Pithoragarh, (PTI) It will be safer to do horizontal drilling to rescue the 41 labourers trapped inside the Silkyara tunnel in Uttarkashi, a former GSI official said on Tuesday.
Tribhuwan Singh Pangti, who retired as the additional director general of the Geological Survey of India (GSI) told PTI that the disaster could have been averted had the construction company prepared a pilot tunnel first to study the rock mass of the area and installed a proper support system.
It will be safer to do horizontal excavation to save the 41 labourers trapped inside the tunnel for 10 days but if vertical excavation is to be done, it should be started from a point where the depth is minimum, Pangti said.
