Silkyara tunnel: Rescuers use hand-held drills to free 41 workers trapped for over 2 weeks
Kirti Panwar, a state government spokesperson, said a dozen men were taking turns burrowing into the debris with hand-held drilling tools for what was hoped would be the final stretch. They had dug nearly 1 meter (3.2 feet) and had up to 11 more meters (36 feet) to go, he said.
Rescuers have also started to create a vertical channel with a newly replaced drilling machine, officials said.
They drilled horizontally for a week but the mountainous terrain proved too much for the machine, which broke down repeatedly before it was damaged irreparably on Friday, officials said.
The work being done now is designed to create a passageway for evacuating the trapped workers. Rescue teams have inserted pipes into dug-out areas and welded them together so the men can be brought out on wheeled stretchers.
Rescuers worked overnight to pull out parts of the broken drilling machine stuck inside the pipes so manual digging could start, Devendra Patwal, a disaster management official at the site, said.
The workers have been trapped since Nov. 12 when a landslide in Uttarakhand state caused a portion of the 4.5-kilometer (2.8-mile) tunnel they were building to collapse about 200 meters (650 feet) from the entrance.
What began as a rescue mission expected to take a few days has turned into weeks, and officials have been hesitant to give a timeline for when it might be completed.
The vertical digging, which started Sunday, required the rescue team to excavate about 106 meters (347 feet) of dirt and debris. The length is nearly double the approximately 60 meters (196 feet) they needed to dig through horizontally from the front.
They could also face similar risks or problems they encountered earlier that damaged the first drilling
