Uttarkashi Tunnel Collapse: In one significant development, an audio-visual communication has been established as the rescue operation to evacuate 40 workers entered Day 10 on Tuesday. It brought hope to the family members of the workers waiting for them to return home.

The wife of one of the trapped workers told ANI that the visuals showing their family members safe have given her hope that they will get out soon.

"I could not see my husband in the video. Whenever I get to see my husband, then only I can say he is safe. But yes, hopes are high that they will be rescued soon. Ummeed jagi he," she said.

Meanwhile, the rescuers have begun the process of laying a pipeline inside the tunnel to bring all the workers out. Various agencies, including tunneling experts from overseas, have been roped in on war footing.

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The trapped workers will also be given mobile phones and chargers inside the tunnel through the 6-inch lifeline, rescue operation in-charge Colonel Deepak Patil had earlier said.

On Monday, a six-inch-wide pipeline was pushed in through the debris of the collapsed portion into the tunnel to create an alternative lifeline for the stranded workers. For the first time since the collapse incident on November 12, hot Khichdi was supplied to the workers through this pipeline. Till now they were surviving on dry fruits, puffed rice and chana.

The under-construction tunnel from Silkyara to Barkot collapsed within a 60-metre stretch on the Silkyara side of the tunnel. Various government agencies are putting in efforts in the rescue operation.

Five options were decided on and five different agencies were detailed to carry out these options. Rescuers reached the tunnel with a vertical drilling machine from the upper part of the hill above the tunnel. The workers are believed to be trapped in a 2 km-built tunnel portion, which is complete with concrete work that provides safety to the workers. This portion of the tunnel has access to electricity and water, and food items and medicines are being provided through a 4-inch compressor pipeline.

(With inputs from ANI)