Rescuers at the under-construction tunnel collapse site here Tuesday initiated the process of inserting large-diameter mild steel pipes through the rubble using an auger machine to rescue the 40 workers trapped for two days now, officials said.
The pipes will be pushed in using the horizontal drilling equipment to create an escape passage for the workers, who are safe and are being provided with oxygen, water and light food items such as dry fruits, they said.
Disaster Management Secretary Ranjit Kumar Sinha said authorities have set a target of rescuing the trapped labourers by Tuesday night or Wednesday.
